53158730 has 16 divisors (see below), whose sum is σ = 96330600. Its totient is φ = 21120192.

The previous prime is 53158709. The next prime is 53158753. The reversal of 53158730 is 3785135.

It can be written as a sum of positive squares in 4 ways, for example, as 37246609 + 15912121 = 6103^2 + 3989^2 .

It is a Curzon number.

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, 16349 + ... + 19328.

Almost surely, 2^53158730 is an apocalyptic number.

53158730 is a deficient number, since it is larger than the sum of its proper divisors (43171870).

53158730 is a wasteful number, since it uses less digits than its factorization.

53158730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35833.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 53158730 is about 7291.0033603065. The cubic root of 53158730 is about 376.0031924054.

The spelling of 53158730 in words is "fifty-three million, one hundred fifty-eight thousand, seven hundred thirty".