53136994 has 4 divisors (see below), whose sum is σ = 79705494. Its totient is φ = 26568496.

The previous prime is 53136989. The next prime is 53137003. The reversal of 53136994 is 49963135.

53136994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 51480625 + 1656369 = 7175^2 + 1287^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13284247 + ... + 13284250.

Almost surely, 2^53136994 is an apocalyptic number.

53136994 is a deficient number, since it is larger than the sum of its proper divisors (26568500).

53136994 is a wasteful number, since it uses less digits than its factorization.

53136994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26568499.

The product of its digits is 87480, while the sum is 40.

The square root of 53136994 is about 7289.5126037342. The cubic root of 53136994 is about 375.9519376095.

The spelling of 53136994 in words is "fifty-three million, one hundred thirty-six thousand, nine hundred ninety-four".