55501506051 has 4 divisors (see below), whose sum is σ = 74002008072. Its totient is φ = 37001004032.

The previous prime is 55501506017. The next prime is 55501506079. The reversal of 55501506051 is 15060510555.

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 55501506051 - 2⁷ = 55501505923 is a prime.

It is a super-2 number, since 2×55501506051² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55501506451) 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, 9250251006 + ... + 9250251011.

It is an arithmetic number, because the mean of its divisors is an integer number (18500502018).

Almost surely, 2^55501506051 is an apocalyptic number.

55501506051 is a deficient number, since it is larger than the sum of its proper divisors (18500502021).

55501506051 is a wasteful number, since it uses less digits than its factorization.

55501506051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18500502020.

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 55501506051 in words is "fifty-five billion, five hundred one million, five hundred six thousand, fifty-one".