51922631 has 4 divisors (see below), whose sum is σ = 52088832. Its totient is φ = 51756432.

The previous prime is 51922627. The next prime is 51922643. The reversal of 51922631 is 13622915.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13622915 = 5 ⋅2724583.

It is a cyclic number.

It is not a de Polignac number, because 51922631 - 2² = 51922627 is a prime.

It is a super-2 number, since 2×51922631² = 5391919219924322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51922594 and 51922603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51922691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82631 + ... + 83256.

It is an arithmetic number, because the mean of its divisors is an integer number (13022208).

Almost surely, 2^51922631 is an apocalyptic number.

51922631 is a deficient number, since it is larger than the sum of its proper divisors (166201).

51922631 is a wasteful number, since it uses less digits than its factorization.

51922631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166200.

The product of its digits is 3240, while the sum is 29.

The square root of 51922631 is about 7205.7359790656. The cubic root of 51922631 is about 373.0659079917.

The spelling of 51922631 in words is "fifty-one million, nine hundred twenty-two thousand, six hundred thirty-one".