53926721 has 2 divisors, whose sum is σ = 53926722. Its totient is φ = 53926720.

The previous prime is 53926667. The next prime is 53926727. The reversal of 53926721 is 12762935.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51480625 + 2446096 = 7175^2 + 1564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53926721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53926727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26963360 + 26963361.

It is an arithmetic number, because the mean of its divisors is an integer number (26963361).

Almost surely, 2^53926721 is an apocalyptic number.

It is an amenable number.

53926721 is a deficient number, since it is larger than the sum of its proper divisors (1).

53926721 is an equidigital number, since it uses as much as digits as its factorization.

53926721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 35.

The square root of 53926721 is about 7343.4815312629. The cubic root of 53926721 is about 377.8052639523.

The spelling of 53926721 in words is "fifty-three million, nine hundred twenty-six thousand, seven hundred twenty-one".