51500245555 has 16 divisors (see below), whose sum is σ = 67481647200. Its totient is φ = 37419644160.

The previous prime is 51500245529. The next prime is 51500245571. The reversal of 51500245555 is 55554200515.

It is not a de Polignac number, because 51500245555 - 2¹⁵ = 51500212787 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379170 + ... + 496759.

It is an arithmetic number, because the mean of its divisors is an integer number (4217602950).

Almost surely, 2^51500245555 is an apocalyptic number.

51500245555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51500245555 is a deficient number, since it is larger than the sum of its proper divisors (15981401645).

51500245555 is a wasteful number, since it uses less digits than its factorization.

51500245555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877014.

The product of its (nonzero) digits is 125000, while the sum is 37.

The spelling of 51500245555 in words is "fifty-one billion, five hundred million, two hundred forty-five thousand, five hundred fifty-five".