53979553 has 2 divisors, whose sum is σ = 53979554. Its totient is φ = 53979552.

The previous prime is 53979533. The next prime is 53979557. The reversal of 53979553 is 35597935.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35247969 + 18731584 = 5937^2 + 4328^2 .

It is a cyclic number.

It is not a de Polignac number, because 53979553 - 2⁵ = 53979521 is a prime.

It is not a weakly prime, because it can be changed into another prime (53979557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26989776 + 26989777.

It is an arithmetic number, because the mean of its divisors is an integer number (26989777).

Almost surely, 2^53979553 is an apocalyptic number.

It is an amenable number.

53979553 is a deficient number, since it is larger than the sum of its proper divisors (1).

53979553 is an equidigital number, since it uses as much as digits as its factorization.

53979553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 637875, while the sum is 46.

The square root of 53979553 is about 7347.0778544943. The cubic root of 53979553 is about 377.9286022686.

The spelling of 53979553 in words is "fifty-three million, nine hundred seventy-nine thousand, five hundred fifty-three".