51122031 has 12 divisors (see below), whose sum is σ = 71257368. Its totient is φ = 32598544.

The previous prime is 51122021. The next prime is 51122047. The reversal of 51122031 is 13022115.

It is not a de Polignac number, because 51122031 - 2¹⁴ = 51105647 is a prime.

It is a super-2 number, since 2×51122031² = 5226924107129922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51122031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51122021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14520 + ... + 17693.

It is an arithmetic number, because the mean of its divisors is an integer number (5938114).

Almost surely, 2^51122031 is an apocalyptic number.

51122031 is a deficient number, since it is larger than the sum of its proper divisors (20135337).

51122031 is a wasteful number, since it uses less digits than its factorization.

51122031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32262 (or 32239 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 51122031 is about 7149.9672027220. The cubic root of 51122031 is about 371.1385213246.

Adding to 51122031 its reverse (13022115), we get a palindrome (64144146).

The spelling of 51122031 in words is "fifty-one million, one hundred twenty-two thousand, thirty-one".