55630052591 has 4 divisors (see below), whose sum is σ = 56986883184. Its totient is φ = 54273222000.

The previous prime is 55630052587. The next prime is 55630052593. The reversal of 55630052591 is 19525003655.

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 55630052591 - 2² = 55630052587 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 1356830551 = 55630052591 / (5 + 5 + 6 + 3 + 0 + 0 + 5 + 2 + 5 + 9 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55630052593) 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, 678415235 + ... + 678415316.

It is an arithmetic number, because the mean of its divisors is an integer number (14246720796).

Almost surely, 2^55630052591 is an apocalyptic number.

55630052591 is a deficient number, since it is larger than the sum of its proper divisors (1356830593).

55630052591 is a wasteful number, since it uses less digits than its factorization.

55630052591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356830592.

The product of its (nonzero) digits is 202500, while the sum is 41.

The spelling of 55630052591 in words is "fifty-five billion, six hundred thirty million, fifty-two thousand, five hundred ninety-one".