55412525521 has 4 divisors (see below), whose sum is σ = 55413020772. Its totient is φ = 55412030272.

The previous prime is 55412525459. The next prime is 55412525537. The reversal of 55412525521 is 12552521455.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 34426947025 + 20985578496 = 185545^2 + 144864^2 .

It is a cyclic number.

It is not a de Polignac number, because 55412525521 - 2⁷ = 55412525393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55412525551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8541 + ... + 333013.

It is an arithmetic number, because the mean of its divisors is an integer number (13853255193).

Almost surely, 2^55412525521 is an apocalyptic number.

It is an amenable number.

55412525521 is a deficient number, since it is larger than the sum of its proper divisors (495251).

55412525521 is a wasteful number, since it uses less digits than its factorization.

55412525521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495250.

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

The spelling of 55412525521 in words is "fifty-five billion, four hundred twelve million, five hundred twenty-five thousand, five hundred twenty-one".