55534815 has 80 divisors (see below), whose sum is σ = 119877120. Its totient is φ = 24027840.

The previous prime is 55534813. The next prime is 55534837. The reversal of 55534815 is 51843555.

It is a happy number.

It is not a de Polignac number, because 55534815 - 2¹ = 55534813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55534815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55534813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 53350 + ... + 54380.

It is an arithmetic number, because the mean of its divisors is an integer number (1498464).

Almost surely, 2^55534815 is an apocalyptic number.

55534815 is an abundant number, since it is smaller than the sum of its proper divisors (64342305).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55534815 is a wasteful number, since it uses less digits than its factorization.

55534815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074 (or 1065 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The square root of 55534815 is about 7452.1684763564. The cubic root of 55534815 is about 381.5239242555.

The spelling of 55534815 in words is "fifty-five million, five hundred thirty-four thousand, eight hundred fifteen".