53560815 has 64 divisors (see below), whose sum is σ = 108380160. Its totient is φ = 21939840.

The previous prime is 53560811. The next prime is 53560831. The reversal of 53560815 is 51806535.

It is not a de Polignac number, because 53560815 - 2² = 53560811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53560811) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 90952 + ... + 91538.

It is an arithmetic number, because the mean of its divisors is an integer number (1693440).

Almost surely, 2^53560815 is an apocalyptic number.

53560815 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

53560815 is an abundant number, since it is smaller than the sum of its proper divisors (54819345).

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

53560815 is a wasteful number, since it uses less digits than its factorization.

53560815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 53560815 is about 7318.5254662398. The cubic root of 53560815 is about 376.9488235758.

The spelling of 53560815 in words is "fifty-three million, five hundred sixty thousand, eight hundred fifteen".