53163731 has 4 divisors (see below), whose sum is σ = 53275200. Its totient is φ = 53052264.

The previous prime is 53163727. The next prime is 53163739. The reversal of 53163731 is 13736135.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 53163731 - 2² = 53163727 is a prime.

It is a super-2 number, since 2×53163731² = 5652764587680722, 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 = 53163694 and 53163703.

It is not an unprimeable number, because it can be changed into a prime (53163739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55016 + ... + 55973.

It is an arithmetic number, because the mean of its divisors is an integer number (13318800).

Almost surely, 2^53163731 is an apocalyptic number.

53163731 is a deficient number, since it is larger than the sum of its proper divisors (111469).

53163731 is a wasteful number, since it uses less digits than its factorization.

53163731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111468.

The product of its digits is 5670, while the sum is 29.

The square root of 53163731 is about 7291.3463091531. The cubic root of 53163731 is about 376.0149830871.

Adding to 53163731 its reverse (13736135), we get a palindrome (66899866).

The spelling of 53163731 in words is "fifty-three million, one hundred sixty-three thousand, seven hundred thirty-one".