53387131 has 8 divisors (see below), whose sum is σ = 64225280. Its totient is φ = 43351848.

The previous prime is 53387129. The next prime is 53387143. The reversal of 53387131 is 13178335.

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 53387131 - 2¹ = 53387129 is a prime.

It is a super-2 number, since 2×53387131² = 5700371512822322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53387093 and 53387102.

It is not an unprimeable number, because it can be changed into a prime (53387161) 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, 200571 + ... + 200836.

It is an arithmetic number, because the mean of its divisors is an integer number (8028160).

Almost surely, 2^53387131 is an apocalyptic number.

53387131 is a deficient number, since it is larger than the sum of its proper divisors (10838149).

53387131 is a wasteful number, since it uses less digits than its factorization.

53387131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401433.

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

The square root of 53387131 is about 7306.6497794817. The cubic root of 53387131 is about 376.5409328775.

The spelling of 53387131 in words is "fifty-three million, three hundred eighty-seven thousand, one hundred thirty-one".