53227731 has 36 divisors (see below), whose sum is σ = 79149512. Its totient is φ = 31804416.

The previous prime is 53227711. The next prime is 53227763. The reversal of 53227731 is 13772235.

53227731 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 53227731 - 2⁶ = 53227667 is a prime.

It is a super-2 number, since 2×53227731² = 5666382694816722, 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 (53227711) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 729111 + ... + 729183.

Almost surely, 2^53227731 is an apocalyptic number.

53227731 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

53227731 is a deficient number, since it is larger than the sum of its proper divisors (25921781).

53227731 is a wasteful number, since it uses less digits than its factorization.

53227731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 122 counting only the distinct ones).

The product of its digits is 8820, while the sum is 30.

The square root of 53227731 is about 7295.7337533657. The cubic root of 53227731 is about 376.1658083974.

Adding to 53227731 its reverse (13772235), we get a palindrome (66999966).

The spelling of 53227731 in words is "fifty-three million, two hundred twenty-seven thousand, seven hundred thirty-one".