53213650657 has 2 divisors, whose sum is σ = 53213650658. Its totient is φ = 53213650656.

The previous prime is 53213650639. The next prime is 53213650667. The reversal of 53213650657 is 75605631235.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44874490896 + 8339159761 = 211836^2 + 91319^2 .

It is a cyclic number.

It is not a de Polignac number, because 53213650657 - 2²⁷ = 53079432929 is a prime.

It is not a weakly prime, because it can be changed into another prime (53213650667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26606825328 + 26606825329.

It is an arithmetic number, because the mean of its divisors is an integer number (26606825329).

Almost surely, 2^53213650657 is an apocalyptic number.

It is an amenable number.

53213650657 is a deficient number, since it is larger than the sum of its proper divisors (1).

53213650657 is an equidigital number, since it uses as much as digits as its factorization.

53213650657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567000, while the sum is 43.

The spelling of 53213650657 in words is "fifty-three billion, two hundred thirteen million, six hundred fifty thousand, six hundred fifty-seven".