55911523 has 2 divisors, whose sum is σ = 55911524. Its totient is φ = 55911522.

The previous prime is 55911497. The next prime is 55911571. The reversal of 55911523 is 32511955.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55911523 is a prime.

It is not a weakly prime, because it can be changed into another prime (55917523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27955761 + 27955762.

It is an arithmetic number, because the mean of its divisors is an integer number (27955762).

Almost surely, 2^55911523 is an apocalyptic number.

55911523 is a deficient number, since it is larger than the sum of its proper divisors (1).

55911523 is an equidigital number, since it uses as much as digits as its factorization.

55911523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6750, while the sum is 31.

The square root of 55911523 is about 7477.4008184663. The cubic root of 55911523 is about 382.3846417615.

The spelling of 55911523 in words is "fifty-five million, nine hundred eleven thousand, five hundred twenty-three".