53245520 has 20 divisors (see below), whose sum is σ = 123796020. Its totient is φ = 21298176.

The previous prime is 53245471. The next prime is 53245559. The reversal of 53245520 is 2554235.

It can be written as a sum of positive squares in 2 ways, for example, as 13957696 + 39287824 = 3736^2 + 6268^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 53245520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332705 + ... + 332864.

It is an arithmetic number, because the mean of its divisors is an integer number (6189801).

Almost surely, 2^53245520 is an apocalyptic number.

It is an amenable number.

53245520 is an abundant number, since it is smaller than the sum of its proper divisors (70550500).

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

53245520 is a wasteful number, since it uses less digits than its factorization.

53245520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665582 (or 665576 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 53245520 is about 7296.9527886646. The cubic root of 53245520 is about 376.2077092896.

Adding to 53245520 its reverse (2554235), we get a palindrome (55799755).

The spelling of 53245520 in words is "fifty-three million, two hundred forty-five thousand, five hundred twenty".