53137381 has 8 divisors (see below), whose sum is σ = 58177728. Its totient is φ = 48132000.

The previous prime is 53137349. The next prime is 53137397. The reversal of 53137381 is 18373135.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53137381 - 2⁵ = 53137349 is a prime.

It is a super-2 number, since 2×53137381² = 5647162519078322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53137321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5505 + ... + 11686.

It is an arithmetic number, because the mean of its divisors is an integer number (7272216).

Almost surely, 2^53137381 is an apocalyptic number.

It is an amenable number.

53137381 is a deficient number, since it is larger than the sum of its proper divisors (5040347).

53137381 is a wasteful number, since it uses less digits than its factorization.

53137381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17483.

The product of its digits is 7560, while the sum is 31.

The square root of 53137381 is about 7289.5391486705. The cubic root of 53137381 is about 375.9528503010.

The spelling of 53137381 in words is "fifty-three million, one hundred thirty-seven thousand, three hundred eighty-one".