53138790 has 24 divisors (see below), whose sum is σ = 138161088. Its totient is φ = 14170320.

The previous prime is 53138783. The next prime is 53138803. The reversal of 53138790 is 9783135.

53138790 is a `hidden beast` number, since 531 + 38 + 7 + 90 = 666.

It is a Curzon number.

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, 295126 + ... + 295305.

It is an arithmetic number, because the mean of its divisors is an integer number (5756712).

Almost surely, 2^53138790 is an apocalyptic number.

53138790 is an abundant number, since it is smaller than the sum of its proper divisors (85022298).

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

53138790 is a wasteful number, since it uses less digits than its factorization.

53138790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590444 (or 590441 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 53138790 is about 7289.6357933713. The cubic root of 53138790 is about 375.9561732152.

The spelling of 53138790 in words is "fifty-three million, one hundred thirty-eight thousand, seven hundred ninety".