55566100551 has 16 divisors (see below), whose sum is σ = 80519220320. Its totient is φ = 33880809600.

The previous prime is 55566100549. The next prime is 55566100559. The reversal of 55566100551 is 15500166555.

It is not a de Polignac number, because 55566100551 - 2¹ = 55566100549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55566100559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6531400 + ... + 6539901.

It is an arithmetic number, because the mean of its divisors is an integer number (5032451270).

Almost surely, 2^55566100551 is an apocalyptic number.

55566100551 is a deficient number, since it is larger than the sum of its proper divisors (24953119769).

55566100551 is a wasteful number, since it uses less digits than its factorization.

55566100551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13071426.

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 55566100551 in words is "fifty-five billion, five hundred sixty-six million, one hundred thousand, five hundred fifty-one".