55560531 has 16 divisors (see below), whose sum is σ = 79944704. Its totient is φ = 34120224.

The previous prime is 55560529. The next prime is 55560551. The reversal of 55560531 is 13506555.

It is not a de Polignac number, because 55560531 - 2¹ = 55560529 is a prime.

It is a super-2 number, since 2×55560531² = 6173945210003922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55560511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22500 + ... + 24846.

It is an arithmetic number, because the mean of its divisors is an integer number (4996544).

Almost surely, 2^55560531 is an apocalyptic number.

55560531 is a deficient number, since it is larger than the sum of its proper divisors (24384173).

55560531 is a wasteful number, since it uses less digits than its factorization.

55560531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2970.

The product of its (nonzero) digits is 11250, while the sum is 30.

The square root of 55560531 is about 7453.8936804867. The cubic root of 55560531 is about 381.5828047686.

The spelling of 55560531 in words is "fifty-five million, five hundred sixty thousand, five hundred thirty-one".