5621931 has 12 divisors (see below), whose sum is σ = 9280752. Its totient is φ = 3212496.

The previous prime is 5621927. The next prime is 5621939. The reversal of 5621931 is 1391265.

5621931 is a `hidden beast` number, since 5 + 621 + 9 + 31 = 666.

It is not a de Polignac number, because 5621931 - 2² = 5621927 is a prime.

It is a super-2 number, since 2×5621931² = 63212216337522, which contains 22 as substring.

It is a nialpdrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 5621895 and 5621904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621939) 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, 44556 + ... + 44681.

It is an arithmetic number, because the mean of its divisors is an integer number (773396).

Almost surely, 2^5621931 is an apocalyptic number.

5621931 is a deficient number, since it is larger than the sum of its proper divisors (3658821).

5621931 is a wasteful number, since it uses less digits than its factorization.

5621931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89250 (or 89247 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 5621931 is about 2371.0611548419. The cubic root of 5621931 is about 177.8123153240.

The spelling of 5621931 in words is "five million, six hundred twenty-one thousand, nine hundred thirty-one".