51554524555 has 4 divisors (see below), whose sum is σ = 61865429472. Its totient is φ = 41243619640.

The previous prime is 51554524531. The next prime is 51554524597. The reversal of 51554524555 is 55542545515.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51554524555 - 2²¹ = 51552427403 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5155452451 + ... + 5155452460.

It is an arithmetic number, because the mean of its divisors is an integer number (15466357368).

Almost surely, 2^51554524555 is an apocalyptic number.

51554524555 is a deficient number, since it is larger than the sum of its proper divisors (10310904917).

51554524555 is a wasteful number, since it uses less digits than its factorization.

51554524555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10310904916.

The product of its digits is 2500000, while the sum is 46.

The spelling of 51554524555 in words is "fifty-one billion, five hundred fifty-four million, five hundred twenty-four thousand, five hundred fifty-five".