2457509 has 2 divisors, whose sum is σ = 2457510. Its totient is φ = 2457508.

The previous prime is 2457487. The next prime is 2457529. The reversal of 2457509 is 9057542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1555009 + 902500 = 1247^2 + 950^2 .

It is a cyclic number.

It is not a de Polignac number, because 2457509 - 2¹⁶ = 2391973 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2457529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1228754 + 1228755.

It is an arithmetic number, because the mean of its divisors is an integer number (1228755).

2^2457509 is an apocalyptic number.

It is an amenable number.

2457509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2457509 is an equidigital number, since it uses as much as digits as its factorization.

2457509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 2457509 is about 1567.6444112107. The cubic root of 2457509 is about 134.9475607946.

The spelling of 2457509 in words is "two million, four hundred fifty-seven thousand, five hundred nine".