2473921 has 2 divisors, whose sum is σ = 2473922. Its totient is φ = 2473920.

The previous prime is 2473907. The next prime is 2473937. The reversal of 2473921 is 1293742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2143296 + 330625 = 1464^2 + 575^2 .

It is a cyclic number.

It is not a de Polignac number, because 2473921 - 2⁹ = 2473409 is a prime.

It is a super-2 number, since 2×2473921² = 12240570228482, which contains 22 as substring.

It is a Chen prime.

2473921 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2473921.

It is not a weakly prime, because it can be changed into another prime (2473951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1236960 + 1236961.

It is an arithmetic number, because the mean of its divisors is an integer number (1236961).

2^2473921 is an apocalyptic number.

It is an amenable number.

2473921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2473921 is an equidigital number, since it uses as much as digits as its factorization.

2473921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 2473921 is about 1572.8703061600. The cubic root of 2473921 is about 135.2473016159.

The spelling of 2473921 in words is "two million, four hundred seventy-three thousand, nine hundred twenty-one".