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55954690900 = 22522919294721
BaseRepresentation
bin110100000111001010…
…001101001101010100
312100102120121210220021
4310013022031031110
51404043400102100
641412155114524
74020416011423
oct640712151524
9170376553807
1055954690900
1121803a674a9
12aa17142a44
135379633574
1429cb5072ba
1516c752ca1a
hexd0728d354

55954690900 has 36 divisors (see below), whose sum is σ = 125608640220. Its totient is φ = 21610086400.

The previous prime is 55954690861. The next prime is 55954690901. The reversal of 55954690900 is 909645955.

It can be written as a sum of positive squares in 6 ways, for example, as 23386896 + 55931304004 = 4836^2 + 236498^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55954690901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9644461 + ... + 9650260.

It is an arithmetic number, because the mean of its divisors is an integer number (3489128895).

Almost surely, 255954690900 is an apocalyptic number.

55954690900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55954690900 is an abundant number, since it is smaller than the sum of its proper divisors (69653949320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55954690900 is a wasteful number, since it uses less digits than its factorization.

55954690900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19294764 (or 19294757 counting only the distinct ones).

The product of its (nonzero) digits is 2187000, while the sum is 52.

The spelling of 55954690900 in words is "fifty-five billion, nine hundred fifty-four million, six hundred ninety thousand, nine hundred".

Divisors: 1 2 4 5 10 20 25 29 50 58 100 116 145 290 580 725 1450 2900 19294721 38589442 77178884 96473605 192947210 385894420 482368025 559546909 964736050 1119093818 1929472100 2238187636 2797734545 5595469090 11190938180 13988672725 27977345450 55954690900