5047921 has 2 divisors, whose sum is σ = 5047922. Its totient is φ = 5047920.

The previous prime is 5047907. The next prime is 5047937. The reversal of 5047921 is 1297405.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3370896 + 1677025 = 1836^2 + 1295^2 .

It is a cyclic number.

It is not a de Polignac number, because 5047921 - 2¹⁹ = 4523633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5047921.

It is not a weakly prime, because it can be changed into another prime (5047951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2523960 + 2523961.

It is an arithmetic number, because the mean of its divisors is an integer number (2523961).

Almost surely, 2^5047921 is an apocalyptic number.

It is an amenable number.

5047921 is a deficient number, since it is larger than the sum of its proper divisors (1).

5047921 is an equidigital number, since it uses as much as digits as its factorization.

5047921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 5047921 is about 2246.7578863776. The cubic root of 5047921 is about 171.5421503607.

The spelling of 5047921 in words is "five million, forty-seven thousand, nine hundred twenty-one".