53136394 has 16 divisors (see below), whose sum is σ = 83680128. Its totient is φ = 25257232.

The previous prime is 53136389. The next prime is 53136397. The reversal of 53136394 is 49363135.

It is not an unprimeable number, because it can be changed into a prime (53136397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4224 + ... + 11140.

It is an arithmetic number, because the mean of its divisors is an integer number (5230008).

Almost surely, 2^53136394 is an apocalyptic number.

53136394 is a deficient number, since it is larger than the sum of its proper divisors (30543734).

53136394 is a wasteful number, since it uses less digits than its factorization.

53136394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7109.

The product of its digits is 29160, while the sum is 34.

The square root of 53136394 is about 7289.4714486031. The cubic root of 53136394 is about 375.9505225752.

The spelling of 53136394 in words is "fifty-three million, one hundred thirty-six thousand, three hundred ninety-four".