5290921 has 2 divisors, whose sum is σ = 5290922. Its totient is φ = 5290920.

The previous prime is 5290919. The next prime is 5290933. The reversal of 5290921 is 1290925.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5221225 + 69696 = 2285^2 + 264^2 .

It is a cyclic number.

It is not a de Polignac number, because 5290921 - 2¹ = 5290919 is a prime.

Together with 5290919, it forms a pair of twin primes.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 5290921.

It is not a weakly prime, because it can be changed into another prime (5290951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2645460 + 2645461.

It is an arithmetic number, because the mean of its divisors is an integer number (2645461).

Almost surely, 2^5290921 is an apocalyptic number.

It is an amenable number.

5290921 is a deficient number, since it is larger than the sum of its proper divisors (1).

5290921 is an equidigital number, since it uses as much as digits as its factorization.

5290921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 5290921 is about 2300.2002086775. The cubic root of 5290921 is about 174.2517275137.

The spelling of 5290921 in words is "five million, two hundred ninety thousand, nine hundred twenty-one".