5491957 has 2 divisors, whose sum is σ = 5491958. Its totient is φ = 5491956.

The previous prime is 5491951. The next prime is 5491961. The reversal of 5491957 is 7591945.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5193841 + 298116 = 2279^2 + 546^2 .

It is a cyclic number.

It is not a de Polignac number, because 5491957 - 2¹⁵ = 5459189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5491951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2745978 + 2745979.

It is an arithmetic number, because the mean of its divisors is an integer number (2745979).

Almost surely, 2^5491957 is an apocalyptic number.

It is an amenable number.

5491957 is a deficient number, since it is larger than the sum of its proper divisors (1).

5491957 is an equidigital number, since it uses as much as digits as its factorization.

5491957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56700, while the sum is 40.

The square root of 5491957 is about 2343.4924791857. The cubic root of 5491957 is about 176.4313305724.

The spelling of 5491957 in words is "five million, four hundred ninety-one thousand, nine hundred fifty-seven".