55346666551 has 4 divisors (see below), whose sum is σ = 60378181704. Its totient is φ = 50315151400.

The previous prime is 55346666533. The next prime is 55346666593. The reversal of 55346666551 is 15566664355.

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 55346666551 - 2⁵ = 55346666519 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 (55346666521) 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, 2515757560 + ... + 2515757581.

It is an arithmetic number, because the mean of its divisors is an integer number (15094545426).

Almost surely, 2^55346666551 is an apocalyptic number.

55346666551 is a deficient number, since it is larger than the sum of its proper divisors (5031515153).

55346666551 is a wasteful number, since it uses less digits than its factorization.

55346666551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5031515152.

The product of its digits is 9720000, while the sum is 52.

The spelling of 55346666551 in words is "fifty-five billion, three hundred forty-six million, six hundred sixty-six thousand, five hundred fifty-one".