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55115202070 = 25171013209971
BaseRepresentation
bin110011010101000111…
…110011111000010110
312021021001222100201101
4303111013303320112
51400333442431240
641153010020314
73660543326215
oct632507637026
9167231870641
1055115202070
1121413105085
12a821b7769a
135274735706
14294bc1d07c
1516789a539a
hexcd51f3e16

55115202070 has 32 divisors (see below), whose sum is σ = 106083154656. Its totient is φ = 20543808000.

The previous prime is 55115202017. The next prime is 55115202073. The reversal of 55115202070 is 7020251155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55115202073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1587816 + ... + 1622155.

It is an arithmetic number, because the mean of its divisors is an integer number (3315098583).

Almost surely, 255115202070 is an apocalyptic number.

55115202070 is a deficient number, since it is larger than the sum of its proper divisors (50967952586).

55115202070 is a wasteful number, since it uses less digits than its factorization.

55115202070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3210096.

The product of its (nonzero) digits is 3500, while the sum is 28.

The spelling of 55115202070 in words is "fifty-five billion, one hundred fifteen million, two hundred two thousand, seventy".

Divisors: 1 2 5 10 17 34 85 101 170 202 505 1010 1717 3434 8585 17170 3209971 6419942 16049855 32099710 54569507 109139014 272847535 324207071 545695070 648414142 1621035355 3242070710 5511520207 11023040414 27557601035 55115202070