55605523 has 2 divisors, whose sum is σ = 55605524. Its totient is φ = 55605522.

The previous prime is 55605503. The next prime is 55605527. The reversal of 55605523 is 32550655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55605523 - 2⁵ = 55605491 is a prime.

It is not a weakly prime, because it can be changed into another prime (55605527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27802761 + 27802762.

It is an arithmetic number, because the mean of its divisors is an integer number (27802762).

Almost surely, 2^55605523 is an apocalyptic number.

55605523 is a deficient number, since it is larger than the sum of its proper divisors (1).

55605523 is an equidigital number, since it uses as much as digits as its factorization.

55605523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22500, while the sum is 31.

The square root of 55605523 is about 7456.9110897207. The cubic root of 55605523 is about 381.6857767955.

The spelling of 55605523 in words is "fifty-five million, six hundred five thousand, five hundred twenty-three".