55497166551 has 8 divisors (see below), whose sum is σ = 82218024560. Its totient is φ = 36998111016.

The previous prime is 55497166547. The next prime is 55497166561. The reversal of 55497166551 is 15566179455.

It is a happy number.

It is not a de Polignac number, because 55497166551 - 2² = 55497166547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55497166511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1027725280 + ... + 1027725333.

It is an arithmetic number, because the mean of its divisors is an integer number (10277253070).

Almost surely, 2^55497166551 is an apocalyptic number.

55497166551 is a deficient number, since it is larger than the sum of its proper divisors (26720858009).

55497166551 is a wasteful number, since it uses less digits than its factorization.

55497166551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055450622 (or 2055450616 counting only the distinct ones).

The product of its digits is 5670000, while the sum is 54.

The spelling of 55497166551 in words is "fifty-five billion, four hundred ninety-seven million, one hundred sixty-six thousand, five hundred fifty-one".