5721931 has 2 divisors, whose sum is σ = 5721932. Its totient is φ = 5721930.

The previous prime is 5721929. The next prime is 5721941. The reversal of 5721931 is 1391275.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5721931 - 2¹ = 5721929 is a prime.

It is a super-2 number, since 2×5721931² = 65480988737522, which contains 22 as substring.

Together with 5721929, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 5721931.

It is not a weakly prime, because it can be changed into another prime (5721901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2860965 + 2860966.

It is an arithmetic number, because the mean of its divisors is an integer number (2860966).

Almost surely, 2^5721931 is an apocalyptic number.

5721931 is a deficient number, since it is larger than the sum of its proper divisors (1).

5721931 is an equidigital number, since it uses as much as digits as its factorization.

5721931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1890, while the sum is 28.

The square root of 5721931 is about 2392.0558103857. The cubic root of 5721931 is about 178.8604032132.

The spelling of 5721931 in words is "five million, seven hundred twenty-one thousand, nine hundred thirty-one".