53504520 has 32 divisors (see below), whose sum is σ = 160513920. Its totient is φ = 14267840.

The previous prime is 53504497. The next prime is 53504527. The reversal of 53504520 is 2540535.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (53504527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222816 + ... + 223055.

It is an arithmetic number, because the mean of its divisors is an integer number (5016060).

Almost surely, 2^53504520 is an apocalyptic number.

It is an amenable number.

53504520 is an abundant number, since it is smaller than the sum of its proper divisors (107009400).

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

53504520 is a wasteful number, since it uses less digits than its factorization.

53504520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445885 (or 445881 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 53504520 is about 7314.6783934771. The cubic root of 53504520 is about 376.8167134819.

It can be divided in two parts, 5350 and 4520, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 53504520 in words is "fifty-three million, five hundred four thousand, five hundred twenty".