51652631 has 4 divisors (see below), whose sum is σ = 51853872. Its totient is φ = 51451392.

The previous prime is 51652619. The next prime is 51652637. The reversal of 51652631 is 13625615.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51652631 is a prime.

It is a super-2 number, since 2×51652631² = 5335988578444322, 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 = 51652594 and 51652603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51652637) 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, 100235 + ... + 100748.

It is an arithmetic number, because the mean of its divisors is an integer number (12963468).

Almost surely, 2^51652631 is an apocalyptic number.

51652631 is a deficient number, since it is larger than the sum of its proper divisors (201241).

51652631 is a wasteful number, since it uses less digits than its factorization.

51652631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201240.

The product of its digits is 5400, while the sum is 29.

The square root of 51652631 is about 7186.9764852822. The cubic root of 51652631 is about 372.4181307399.

The spelling of 51652631 in words is "fifty-one million, six hundred fifty-two thousand, six hundred thirty-one".