52555251421 has 12 divisors (see below), whose sum is σ = 56185826944. Its totient is φ = 49106106000.

The previous prime is 52555251403. The next prime is 52555251449. The reversal of 52555251421 is 12415255525.

It is not a de Polignac number, because 52555251421 - 2⁵ = 52555251389 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52555251461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 981855 + ... + 1033996.

Almost surely, 2^52555251421 is an apocalyptic number.

It is an amenable number.

52555251421 is a deficient number, since it is larger than the sum of its proper divisors (3630575523).

52555251421 is a wasteful number, since it uses less digits than its factorization.

52555251421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015940 (or 2015911 counting only the distinct ones).

The product of its digits is 100000, while the sum is 37.

The spelling of 52555251421 in words is "fifty-two billion, five hundred fifty-five million, two hundred fifty-one thousand, four hundred twenty-one".