52021525251 has 4 divisors (see below), whose sum is σ = 69362033672. Its totient is φ = 34681016832.

The previous prime is 52021525217. The next prime is 52021525273. The reversal of 52021525251 is 15252512025.

52021525251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 52021525251 - 2⁶ = 52021525187 is a prime.

It is a super-2 number, since 2×52021525251² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52021525211) 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, 8670254206 + ... + 8670254211.

It is an arithmetic number, because the mean of its divisors is an integer number (17340508418).

Almost surely, 2^52021525251 is an apocalyptic number.

52021525251 is a deficient number, since it is larger than the sum of its proper divisors (17340508421).

52021525251 is a wasteful number, since it uses less digits than its factorization.

52021525251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17340508420.

The product of its (nonzero) digits is 10000, while the sum is 30.

The spelling of 52021525251 in words is "fifty-two billion, twenty-one million, five hundred twenty-five thousand, two hundred fifty-one".