53213251409 has 2 divisors, whose sum is σ = 53213251410. Its totient is φ = 53213251408.

The previous prime is 53213251397. The next prime is 53213251423. The reversal of 53213251409 is 90415231235.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43756272400 + 9456979009 = 209180^2 + 97247^2 .

It is a cyclic number.

It is not a de Polignac number, because 53213251409 - 2⁸ = 53213251153 is a prime.

It is not a weakly prime, because it can be changed into another prime (53213211409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26606625704 + 26606625705.

It is an arithmetic number, because the mean of its divisors is an integer number (26606625705).

Almost surely, 2^53213251409 is an apocalyptic number.

It is an amenable number.

53213251409 is a deficient number, since it is larger than the sum of its proper divisors (1).

53213251409 is an equidigital number, since it uses as much as digits as its factorization.

53213251409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 53213251409 in words is "fifty-three billion, two hundred thirteen million, two hundred fifty-one thousand, four hundred nine".