54136731 has 24 divisors (see below), whose sum is σ = 79768080. Its totient is φ = 32633920.

The previous prime is 54136729. The next prime is 54136751. The reversal of 54136731 is 13763145.

It is not a de Polignac number, because 54136731 - 2¹ = 54136729 is a prime.

It is a super-2 number, since 2×54136731² = 5861571286732722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54136751) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106105 + ... + 106613.

It is an arithmetic number, because the mean of its divisors is an integer number (3323670).

Almost surely, 2^54136731 is an apocalyptic number.

54136731 is a deficient number, since it is larger than the sum of its proper divisors (25631349).

54136731 is a wasteful number, since it uses less digits than its factorization.

54136731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827 (or 816 counting only the distinct ones).

The product of its digits is 7560, while the sum is 30.

The square root of 54136731 is about 7357.7667128008. The cubic root of 54136731 is about 378.2950650980.

Adding to 54136731 its reverse (13763145), we get a palindrome (67899876).

The spelling of 54136731 in words is "fifty-four million, one hundred thirty-six thousand, seven hundred thirty-one".