51042131 has 8 divisors (see below), whose sum is σ = 58637664. Its totient is φ = 43522560.

The previous prime is 51042053. The next prime is 51042149. The reversal of 51042131 is 13124015.

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

It is a cyclic number.

It is not a de Polignac number, because 51042131 - 2¹⁸ = 50779987 is a prime.

It is a super-2 number, since 2×51042131² = 5210598274042322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51042191) 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, 17540 + ... + 20241.

It is an arithmetic number, because the mean of its divisors is an integer number (7329708).

Almost surely, 2^51042131 is an apocalyptic number.

51042131 is a deficient number, since it is larger than the sum of its proper divisors (7595533).

51042131 is a wasteful number, since it uses less digits than its factorization.

51042131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37981.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 51042131 is about 7144.3775796076. The cubic root of 51042131 is about 370.9450663718.

Adding to 51042131 its reverse (13124015), we get a palindrome (64166146).

The spelling of 51042131 in words is "fifty-one million, forty-two thousand, one hundred thirty-one".