51033131 has 16 divisors (see below), whose sum is σ = 53813760. Its totient is φ = 48353760.

The previous prime is 51033119. The next prime is 51033137. The reversal of 51033131 is 13133015.

It is a cyclic number.

It is not a de Polignac number, because 51033131 - 2¹⁸ = 50770987 is a prime.

It is a super-2 number, since 2×51033131² = 5208760919326322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51033137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281861 + ... + 282041.

It is an arithmetic number, because the mean of its divisors is an integer number (3363360).

Almost surely, 2^51033131 is an apocalyptic number.

51033131 is a deficient number, since it is larger than the sum of its proper divisors (2780629).

51033131 is a wasteful number, since it uses less digits than its factorization.

51033131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386.

The product of its (nonzero) digits is 135, while the sum is 17.

The square root of 51033131 is about 7143.7476859139. The cubic root of 51033131 is about 370.9232628031.

Adding to 51033131 its reverse (13133015), we get a palindrome (64166146).

The spelling of 51033131 in words is "fifty-one million, thirty-three thousand, one hundred thirty-one".