52510532142521 has 4 divisors (see below), whose sum is σ = 55599386974452. Its totient is φ = 49421677310592.

The previous prime is 52510532142491. The next prime is 52510532142529. The reversal of 52510532142521 is 12524123501525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36490237711225 + 16020294431296 = 6040715^2 + 4002536^2 .

It is a cyclic number.

It is not a de Polignac number, because 52510532142521 - 2²² = 52510527948217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52510532142529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1544427415940 + ... + 1544427415973.

It is an arithmetic number, because the mean of its divisors is an integer number (13899846743613).

Almost surely, 2^{52510532142521} is an apocalyptic number.

It is an amenable number.

52510532142521 is a deficient number, since it is larger than the sum of its proper divisors (3088854831931).

52510532142521 is a wasteful number, since it uses less digits than its factorization.

52510532142521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088854831930.

The product of its (nonzero) digits is 120000, while the sum is 38.

The spelling of 52510532142521 in words is "fifty-two trillion, five hundred ten billion, five hundred thirty-two million, one hundred forty-two thousand, five hundred twenty-one".