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55295997211 = 721386806903
BaseRepresentation
bin110011011111111001…
…011111010100011011
312021201200011201000201
4303133321133110123
51401221233402321
641222545043031
73665200135600
oct633771372433
9167650151021
1055295997211
11214a6170154
12a872626477
1352a30274a0
142967c426a7
1516897b9291
hexcdfe5f51b

55295997211 has 12 divisors (see below), whose sum is σ = 69271909392. Its totient is φ = 43750678608.

The previous prime is 55295997209. The next prime is 55295997241. The reversal of 55295997211 is 11279959255.

It is not a de Polignac number, because 55295997211 - 21 = 55295997209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55295997241) 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, 43402815 + ... + 43404088.

It is an arithmetic number, because the mean of its divisors is an integer number (5772659116).

Almost surely, 255295997211 is an apocalyptic number.

55295997211 is a deficient number, since it is larger than the sum of its proper divisors (13975912181).

55295997211 is a wasteful number, since it uses less digits than its factorization.

55295997211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86806930 (or 86806923 counting only the distinct ones).

The product of its digits is 2551500, while the sum is 55.

The spelling of 55295997211 in words is "fifty-five billion, two hundred ninety-five million, nine hundred ninety-seven thousand, two hundred eleven".

Divisors: 1 7 13 49 91 637 86806903 607648321 1128489739 4253538247 7899428173 55295997211