53432520 has 32 divisors (see below), whose sum is σ = 160297920. Its totient is φ = 14248640.

The previous prime is 53432501. The next prime is 53432537. The reversal of 53432520 is 2523435.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222516 + ... + 222755.

It is an arithmetic number, because the mean of its divisors is an integer number (5009310).

Almost surely, 2^53432520 is an apocalyptic number.

It is an amenable number.

53432520 is an abundant number, since it is smaller than the sum of its proper divisors (106865400).

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

53432520 is a wasteful number, since it uses less digits than its factorization.

53432520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445285 (or 445281 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 53432520 is about 7309.7551258575. The cubic root of 53432520 is about 376.6476126142.

Adding to 53432520 its reverse (2523435), we get a palindrome (55955955).

The spelling of 53432520 in words is "fifty-three million, four hundred thirty-two thousand, five hundred twenty".