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55122053 = 723342373
BaseRepresentation
bin1101001001000…
…1100010000101
310211201111020112
43102101202011
5103102401203
65245242405
71236346460
oct322214205
9124644215
1055122053
112912a018
1216563405
13b55c8cc
14746c2d7
154c8c6d8
hex3491885

55122053 has 8 divisors (see below), whose sum is σ = 65735808. Its totient is φ = 45193104.

The previous prime is 55122037. The next prime is 55122077. The reversal of 55122053 is 35022155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55122053 - 24 = 55122037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55122083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171026 + ... + 171347.

It is an arithmetic number, because the mean of its divisors is an integer number (8216976).

Almost surely, 255122053 is an apocalyptic number.

It is an amenable number.

55122053 is a deficient number, since it is larger than the sum of its proper divisors (10613755).

55122053 is a wasteful number, since it uses less digits than its factorization.

55122053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342403.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 55122053 is about 7424.4227385030. The cubic root of 55122053 is about 380.5763483985.

The spelling of 55122053 in words is "fifty-five million, one hundred twenty-two thousand, fifty-three".

Divisors: 1 7 23 161 342373 2396611 7874579 55122053