51858131 has 8 divisors (see below), whose sum is σ = 56390880. Its totient is φ = 47403072.

The previous prime is 51858047. The next prime is 51858161. The reversal of 51858131 is 13185815.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51858131 - 2¹⁰ = 51857107 is a prime.

It is a super-2 number, since 2×51858131² = 5378531501626322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51858161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18026 + ... + 20703.

It is an arithmetic number, because the mean of its divisors is an integer number (7048860).

Almost surely, 2^51858131 is an apocalyptic number.

51858131 is a deficient number, since it is larger than the sum of its proper divisors (4532749).

51858131 is a wasteful number, since it uses less digits than its factorization.

51858131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38845.

The product of its digits is 4800, while the sum is 32.

The square root of 51858131 is about 7201.2589871494. The cubic root of 51858131 is about 372.9113657344.

The spelling of 51858131 in words is "fifty-one million, eight hundred fifty-eight thousand, one hundred thirty-one".