53121507571 has 16 divisors (see below), whose sum is σ = 62786579328. Its totient is φ = 44394537600.

The previous prime is 53121507559. The next prime is 53121507583. The reversal of 53121507571 is 17570512135.

It is an interprime number because it is at equal distance from previous prime (53121507559) and next prime (53121507583).

It is a cyclic number.

It is not a de Polignac number, because 53121507571 - 2⁵ = 53121507539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53121507571.

It is not an unprimeable number, because it can be changed into a prime (53121507671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3295125 + ... + 3311206.

It is an arithmetic number, because the mean of its divisors is an integer number (3924161208).

Almost surely, 2^53121507571 is an apocalyptic number.

53121507571 is a deficient number, since it is larger than the sum of its proper divisors (9665071757).

53121507571 is a wasteful number, since it uses less digits than its factorization.

53121507571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6606402.

The product of its (nonzero) digits is 36750, while the sum is 37.

The spelling of 53121507571 in words is "fifty-three billion, one hundred twenty-one million, five hundred seven thousand, five hundred seventy-one".