55632402551 has 8 divisors (see below), whose sum is σ = 60820978944. Its totient is φ = 50465673720.

The previous prime is 55632402523. The next prime is 55632402563. The reversal of 55632402551 is 15520423655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55632402551 - 2⁶ = 55632402487 is a prime.

It is a super-2 number, since 2×55632402551² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55632402751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5456561 + ... + 5466746.

It is an arithmetic number, because the mean of its divisors is an integer number (7602622368).

Almost surely, 2^55632402551 is an apocalyptic number.

55632402551 is a deficient number, since it is larger than the sum of its proper divisors (5188576393).

55632402551 is a wasteful number, since it uses less digits than its factorization.

55632402551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10923781.

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 55632402551 in words is "fifty-five billion, six hundred thirty-two million, four hundred two thousand, five hundred fifty-one".