53138694 has 32 divisors (see below), whose sum is σ = 126743040. Its totient is φ = 14522112.

The previous prime is 53138693. The next prime is 53138713. The reversal of 53138694 is 49683135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53138693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26539 + ... + 28470.

It is an arithmetic number, because the mean of its divisors is an integer number (3960720).

Almost surely, 2^53138694 is an apocalyptic number.

53138694 is an abundant number, since it is smaller than the sum of its proper divisors (73604346).

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

53138694 is a wasteful number, since it uses less digits than its factorization.

53138694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55044.

The product of its digits is 77760, while the sum is 39.

The square root of 53138694 is about 7289.6292086772. The cubic root of 53138694 is about 375.9559468156.

The spelling of 53138694 in words is "fifty-three million, one hundred thirty-eight thousand, six hundred ninety-four".