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55123552423 = 1731531208121
BaseRepresentation
bin110011010101100111…
…101010100010100111
312021021122200121020201
4303111213222202213
51400343112134143
641153505011331
73661004315242
oct632547524247
9167248617221
1055123552423
11214178988a5
12a824923b47
13527639a454
14294cd94259
1516795a464d
hexcd59ea8a7

55123552423 has 8 divisors (see below), whose sum is σ = 55478665296. Its totient is φ = 54768859200.

The previous prime is 55123552411. The next prime is 55123552433. The reversal of 55123552423 is 32425532155.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-55123552423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55123552403) 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, 160803 + ... + 368923.

It is an arithmetic number, because the mean of its divisors is an integer number (6934833162).

Almost surely, 255123552423 is an apocalyptic number.

55123552423 is a deficient number, since it is larger than the sum of its proper divisors (355112873).

55123552423 is a wasteful number, since it uses less digits than its factorization.

55123552423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209825.

The product of its digits is 180000, while the sum is 37.

The spelling of 55123552423 in words is "fifty-five billion, one hundred twenty-three million, five hundred fifty-two thousand, four hundred twenty-three".

Divisors: 1 173 1531 208121 264863 36004933 318633251 55123552423