51029131 has 4 divisors (see below), whose sum is σ = 52675264. Its totient is φ = 49383000.

The previous prime is 51029093. The next prime is 51029137. The reversal of 51029131 is 13192015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13192015 = 5 ⋅2638403.

It is not a de Polignac number, because 51029131 - 2¹⁹ = 50504843 is a prime.

It is a super-2 number, since 2×51029131² = 5207944421230322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51029137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823020 + ... + 823081.

It is an arithmetic number, because the mean of its divisors is an integer number (13168816).

Almost surely, 2^51029131 is an apocalyptic number.

51029131 is a deficient number, since it is larger than the sum of its proper divisors (1646133).

51029131 is a wasteful number, since it uses less digits than its factorization.

51029131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646132.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 51029131 is about 7143.4677153327. The cubic root of 51029131 is about 370.9135715053.

The spelling of 51029131 in words is "fifty-one million, twenty-nine thousand, one hundred thirty-one".