55869523 has 2 divisors, whose sum is σ = 55869524. Its totient is φ = 55869522.

The previous prime is 55869509. The next prime is 55869529. The reversal of 55869523 is 32596855.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55869523 - 2¹⁷ = 55738451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55869523.

It is not a weakly prime, because it can be changed into another prime (55869529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27934761 + 27934762.

It is an arithmetic number, because the mean of its divisors is an integer number (27934762).

Almost surely, 2^55869523 is an apocalyptic number.

55869523 is a deficient number, since it is larger than the sum of its proper divisors (1).

55869523 is an equidigital number, since it uses as much as digits as its factorization.

55869523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324000, while the sum is 43.

The square root of 55869523 is about 7474.5918283208. The cubic root of 55869523 is about 382.2888703405.

The spelling of 55869523 in words is "fifty-five million, eight hundred sixty-nine thousand, five hundred twenty-three".