51956171000 has 32 divisors (see below), whose sum is σ = 121577442480. Its totient is φ = 20782468000.

The previous prime is 51956170999. The next prime is 51956171039. The reversal of 51956171000 is 17165915.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25977086 + ... + 25979085.

Almost surely, 2^51956171000 is an apocalyptic number.

51956171000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51956171000 is an abundant number, since it is smaller than the sum of its proper divisors (69621271480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51956171000 is a wasteful number, since it uses less digits than its factorization.

51956171000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51956192 (or 51956178 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 35.

The spelling of 51956171000 in words is "fifty-one billion, nine hundred fifty-six million, one hundred seventy-one thousand".