53138331 has 12 divisors (see below), whose sum is σ = 77077000. Its totient is φ = 35277120.

The previous prime is 53138329. The next prime is 53138387. The reversal of 53138331 is 13383135.

It is not a de Polignac number, because 53138331 - 2¹ = 53138329 is a prime.

It is a super-2 number, since 2×53138331² = 5647364442931122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53138295 and 53138304.

It is not an unprimeable number, because it can be changed into a prime (53138321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10081 + ... + 14418.

Almost surely, 2^53138331 is an apocalyptic number.

53138331 is a deficient number, since it is larger than the sum of its proper divisors (23938669).

53138331 is a wasteful number, since it uses less digits than its factorization.

53138331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24746 (or 24743 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 53138331 is about 7289.6043102489. The cubic root of 53138331 is about 375.9550907393.

It can be divided in two parts, 53 and 138331, that added together give a square (138384 = 372²).

The spelling of 53138331 in words is "fifty-three million, one hundred thirty-eight thousand, three hundred thirty-one".