5423921 has 2 divisors, whose sum is σ = 5423922. Its totient is φ = 5423920.

The previous prime is 5423909. The next prime is 5423947. The reversal of 5423921 is 1293245.

It is an a-pointer prime, because the next prime (5423947) can be obtained adding 5423921 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2927521 + 2496400 = 1711^2 + 1580^2 .

It is a cyclic number.

It is not a de Polignac number, because 5423921 - 2⁶ = 5423857 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (5423981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2711960 + 2711961.

It is an arithmetic number, because the mean of its divisors is an integer number (2711961).

Almost surely, 2^5423921 is an apocalyptic number.

It is an amenable number.

5423921 is a deficient number, since it is larger than the sum of its proper divisors (1).

5423921 is an equidigital number, since it uses as much as digits as its factorization.

5423921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 5423921 is about 2328.9312999743. The cubic root of 5423921 is about 175.6997398483.

The spelling of 5423921 in words is "five million, four hundred twenty-three thousand, nine hundred twenty-one".