53072505 has 12 divisors (see below), whose sum is σ = 91992420. Its totient is φ = 28305312.

The previous prime is 53072497. The next prime is 53072519. The reversal of 53072505 is 50527035.

It can be written as a sum of positive squares in 2 ways, for example, as 31505769 + 21566736 = 5613^2 + 4644^2 .

It is not a de Polignac number, because 53072505 - 2³ = 53072497 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 589650 + ... + 589739.

It is an arithmetic number, because the mean of its divisors is an integer number (7666035).

Almost surely, 2^53072505 is an apocalyptic number.

It is an amenable number.

53072505 is a deficient number, since it is larger than the sum of its proper divisors (38919915).

53072505 is a wasteful number, since it uses less digits than its factorization.

53072505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179400 (or 1179397 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 27.

The square root of 53072505 is about 7285.0878512205. The cubic root of 53072505 is about 375.7997863654.

The spelling of 53072505 in words is "fifty-three million, seventy-two thousand, five hundred five".