55574447555 has 64 divisors (see below), whose sum is σ = 74992521600. Its totient is φ = 39525376000.

The previous prime is 55574447519. The next prime is 55574447563.

55574447555 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55574447555 - 2¹⁰ = 55574446531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55574447555.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59821331 + ... + 59822259.

It is an arithmetic number, because the mean of its divisors is an integer number (1171758150).

Almost surely, 2^55574447555 is an apocalyptic number.

55574447555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55574447555 is a deficient number, since it is larger than the sum of its proper divisors (19418074045).

55574447555 is a wasteful number, since it uses less digits than its factorization.

55574447555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157 (or 1135 counting only the distinct ones).

The product of its digits is 49000000, while the sum is 56.

The spelling of 55574447555 in words is "fifty-five billion, five hundred seventy-four million, four hundred forty-seven thousand, five hundred fifty-five".