55609523 has 6 divisors (see below), whose sum is σ = 58690764. Its totient is φ = 52682364.

The previous prime is 55609517. The next prime is 55609537. The reversal of 55609523 is 32590655.

It is not a de Polignac number, because 55609523 - 2¹⁸ = 55347379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55609513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76661 + ... + 77382.

It is an arithmetic number, because the mean of its divisors is an integer number (9781794).

Almost surely, 2^55609523 is an apocalyptic number.

55609523 is a deficient number, since it is larger than the sum of its proper divisors (3081241).

55609523 is a wasteful number, since it uses less digits than its factorization.

55609523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154081 (or 154062 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 35.

The square root of 55609523 is about 7457.1792924671. The cubic root of 55609523 is about 381.6949288030.

The spelling of 55609523 in words is "fifty-five million, six hundred nine thousand, five hundred twenty-three".