53646731 has 4 divisors (see below), whose sum is σ = 53661432. Its totient is φ = 53632032.

The previous prime is 53646721. The next prime is 53646739. The reversal of 53646731 is 13764635.

53646731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 53646731 - 2¹⁰ = 53645707 is a prime.

It is a super-2 number, since 2×53646731² = 5755943493972722, 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 = 53646691 and 53646700.

It is not an unprimeable number, because it can be changed into a prime (53646739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2756 + ... + 10718.

It is an arithmetic number, because the mean of its divisors is an integer number (13415358).

Almost surely, 2^53646731 is an apocalyptic number.

53646731 is a deficient number, since it is larger than the sum of its proper divisors (14701).

53646731 is an equidigital number, since it uses as much as digits as its factorization.

53646731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14700.

The product of its digits is 45360, while the sum is 35.

The square root of 53646731 is about 7324.3928758635. The cubic root of 53646731 is about 377.1502683196.

The spelling of 53646731 in words is "fifty-three million, six hundred forty-six thousand, seven hundred thirty-one".