51662131 has 8 divisors (see below), whose sum is σ = 52336944. Its totient is φ = 50991360.

The previous prime is 51662119. The next prime is 51662141. The reversal of 51662131 is 13126615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51662131 - 2²⁵ = 18107699 is a prime.

It is a super-2 number, since 2×51662131² = 5337951558922322, 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 = 51662096 and 51662105.

It is not an unprimeable number, because it can be changed into a prime (51662141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30940 + ... + 32566.

It is an arithmetic number, because the mean of its divisors is an integer number (6542118).

Almost surely, 2^51662131 is an apocalyptic number.

51662131 is a deficient number, since it is larger than the sum of its proper divisors (674813).

51662131 is a wasteful number, since it uses less digits than its factorization.

51662131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021.

The product of its digits is 1080, while the sum is 25.

The square root of 51662131 is about 7187.6373726003. The cubic root of 51662131 is about 372.4409611701.

Adding to 51662131 its reverse (13126615), we get a palindrome (64788746).

The spelling of 51662131 in words is "fifty-one million, six hundred sixty-two thousand, one hundred thirty-one".