51692271 has 4 divisors (see below), whose sum is σ = 68923032. Its totient is φ = 34461512.

The previous prime is 51692237. The next prime is 51692273. The reversal of 51692271 is 17229615.

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 51692271 - 2¹⁷ = 51561199 is a prime.

It is a super-2 number, since 2×51692271² = 5344181762274882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51692273) 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, 8615376 + ... + 8615381.

It is an arithmetic number, because the mean of its divisors is an integer number (17230758).

Almost surely, 2^51692271 is an apocalyptic number.

51692271 is a deficient number, since it is larger than the sum of its proper divisors (17230761).

51692271 is a wasteful number, since it uses less digits than its factorization.

51692271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17230760.

The product of its digits is 7560, while the sum is 33.

The square root of 51692271 is about 7189.7337224684. The cubic root of 51692271 is about 372.5133751935.

The spelling of 51692271 in words is "fifty-one million, six hundred ninety-two thousand, two hundred seventy-one".