51192171 has 24 divisors (see below), whose sum is σ = 75246080. Its totient is φ = 33534000.

The previous prime is 51192157. The next prime is 51192173. The reversal of 51192171 is 17129115.

It is not a de Polignac number, because 51192171 - 2⁵ = 51192139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51192173) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188766 + ... + 189036.

Almost surely, 2^51192171 is an apocalyptic number.

51192171 is a deficient number, since it is larger than the sum of its proper divisors (24053909).

51192171 is a wasteful number, since it uses less digits than its factorization.

51192171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567 (or 564 counting only the distinct ones).

The product of its digits is 630, while the sum is 27.

The square root of 51192171 is about 7154.8704390785. The cubic root of 51192171 is about 371.3081791623.

The spelling of 51192171 in words is "fifty-one million, one hundred ninety-two thousand, one hundred seventy-one".