53502500 has 30 divisors (see below), whose sum is σ = 117004734. Its totient is φ = 21400000.

The previous prime is 53502487. The next prime is 53502521. The reversal of 53502500 is 520535.

It can be written as a sum of positive squares in 5 ways, for example, as 29138404 + 24364096 = 5398^2 + 4936^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8201 + ... + 13200.

Almost surely, 2^53502500 is an apocalyptic number.

53502500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

53502500 is an abundant number, since it is smaller than the sum of its proper divisors (63502234).

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

53502500 is a wasteful number, since it uses less digits than its factorization.

53502500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21425 (or 21408 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 53502500 is about 7314.5403136492. The cubic root of 53502500 is about 376.8119713321.

The spelling of 53502500 in words is "fifty-three million, five hundred two thousand, five hundred".