55505504951 has 16 divisors (see below), whose sum is σ = 64002506400. Its totient is φ = 47680140288.

The previous prime is 55505504933. The next prime is 55505504963. The reversal of 55505504951 is 15940550555.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55505504951 is a prime.

It is a super-2 number, since 2×55505504951² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55505504921) 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, 1391321 + ... + 1430658.

It is an arithmetic number, because the mean of its divisors is an integer number (4000156650).

Almost surely, 2^55505504951 is an apocalyptic number.

55505504951 is a deficient number, since it is larger than the sum of its proper divisors (8497001449).

55505504951 is a wasteful number, since it uses less digits than its factorization.

55505504951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2822098.

The product of its (nonzero) digits is 562500, while the sum is 44.

The spelling of 55505504951 in words is "fifty-five billion, five hundred five million, five hundred four thousand, nine hundred fifty-one".