52540552515251 has 4 divisors (see below), whose sum is σ = 52540607981400. Its totient is φ = 52540497049104.

The previous prime is 52540552515203. The next prime is 52540552515263. The reversal of 52540552515251 is 15251525504525.

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

It is a cyclic number.

It is not a de Polignac number, because 52540552515251 - 2¹⁴ = 52540552498867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52540552515196 and 52540552515205.

It is not an unprimeable number, because it can be changed into a prime (52540552115251) 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, 26287061 + ... + 28215078.

It is an arithmetic number, because the mean of its divisors is an integer number (13135151995350).

Almost surely, 2^{52540552515251} is an apocalyptic number.

52540552515251 is a deficient number, since it is larger than the sum of its proper divisors (55466149).

52540552515251 is an equidigital number, since it uses as much as digits as its factorization.

52540552515251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55466148.

The product of its (nonzero) digits is 2500000, while the sum is 47.

The spelling of 52540552515251 in words is "fifty-two trillion, five hundred forty billion, five hundred fifty-two million, five hundred fifteen thousand, two hundred fifty-one".