55662032251 has 4 divisors (see below), whose sum is σ = 63613751152. Its totient is φ = 47710313352.

The previous prime is 55662032249. The next prime is 55662032347. The reversal of 55662032251 is 15223026655.

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 55662032251 - 2¹ = 55662032249 is a prime.

It is a super-2 number, since 2×55662032251² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55662032251.

It is not an unprimeable number, because it can be changed into a prime (55662032551) 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, 3975859440 + ... + 3975859453.

It is an arithmetic number, because the mean of its divisors is an integer number (15903437788).

Almost surely, 2^55662032251 is an apocalyptic number.

55662032251 is a deficient number, since it is larger than the sum of its proper divisors (7951718901).

55662032251 is an equidigital number, since it uses as much as digits as its factorization.

55662032251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7951718900.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 55662032251 in words is "fifty-five billion, six hundred sixty-two million, thirty-two thousand, two hundred fifty-one".