55370552399 has 4 divisors (see below), whose sum is σ = 55371549720. Its totient is φ = 55369555080.

The previous prime is 55370552323. The next prime is 55370552411. The reversal of 55370552399 is 99325507355.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55370552399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55370552399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55370555399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410144 + ... + 528165.

It is an arithmetic number, because the mean of its divisors is an integer number (13842887430).

Almost surely, 2^55370552399 is an apocalyptic number.

55370552399 is a deficient number, since it is larger than the sum of its proper divisors (997321).

55370552399 is an equidigital number, since it uses as much as digits as its factorization.

55370552399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997320.

The product of its (nonzero) digits is 6378750, while the sum is 53.

The spelling of 55370552399 in words is "fifty-five billion, three hundred seventy million, five hundred fifty-two thousand, three hundred ninety-nine".