51022131 has 4 divisors (see below), whose sum is σ = 68029512. Its totient is φ = 34014752.

The previous prime is 51022129. The next prime is 51022133. The reversal of 51022131 is 13122015.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (51022129) and next prime (51022133).

It is a cyclic number.

It is not a de Polignac number, because 51022131 - 2¹ = 51022129 is a prime.

It is a super-2 number, since 2×51022131² = 5206515703562322, 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 51022131.

It is not an unprimeable number, because it can be changed into a prime (51022133) 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, 8503686 + ... + 8503691.

It is an arithmetic number, because the mean of its divisors is an integer number (17007378).

Almost surely, 2^51022131 is an apocalyptic number.

51022131 is a deficient number, since it is larger than the sum of its proper divisors (17007381).

51022131 is a wasteful number, since it uses less digits than its factorization.

51022131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17007380.

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

The square root of 51022131 is about 7142.9777404105. The cubic root of 51022131 is about 370.8966105153.

Adding to 51022131 its reverse (13122015), we get a palindrome (64144146).

The spelling of 51022131 in words is "fifty-one million, twenty-two thousand, one hundred thirty-one".