54647731 has 4 divisors (see below), whose sum is σ = 54760432. Its totient is φ = 54535032.

The previous prime is 54647713. The next prime is 54647737. The reversal of 54647731 is 13774645.

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 54647731 - 2¹³ = 54639539 is a prime.

It is a super-2 number, since 2×54647731² = 5972749006896722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54647737) 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, 55620 + ... + 56593.

It is an arithmetic number, because the mean of its divisors is an integer number (13690108).

Almost surely, 2^54647731 is an apocalyptic number.

54647731 is a deficient number, since it is larger than the sum of its proper divisors (112701).

54647731 is a wasteful number, since it uses less digits than its factorization.

54647731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112700.

The product of its digits is 70560, while the sum is 37.

The square root of 54647731 is about 7392.4103646916. The cubic root of 54647731 is about 379.4815899480.

The spelling of 54647731 in words is "fifty-four million, six hundred forty-seven thousand, seven hundred thirty-one".