13531555057 has 2 divisors, whose sum is σ = 13531555058. Its totient is φ = 13531555056.

The previous prime is 13531555043. The next prime is 13531555091. The reversal of 13531555057 is 75055513531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10112112481 + 3419442576 = 100559^2 + 58476^2 .

It is a cyclic number.

It is not a de Polignac number, because 13531555057 - 2³¹ = 11384071409 is a prime.

It is not a weakly prime, because it can be changed into another prime (13531555097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765777528 + 6765777529.

It is an arithmetic number, because the mean of its divisors is an integer number (6765777529).

Almost surely, 2^13531555057 is an apocalyptic number.

It is an amenable number.

13531555057 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531555057 is an equidigital number, since it uses as much as digits as its factorization.

13531555057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196875, while the sum is 40.

The spelling of 13531555057 in words is "thirteen billion, five hundred thirty-one million, five hundred fifty-five thousand, fifty-seven".