2523739 has 2 divisors, whose sum is σ = 2523740. Its totient is φ = 2523738.

The previous prime is 2523727. The next prime is 2523743. The reversal of 2523739 is 9373252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2523739 - 2⁵ = 2523707 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2523739.

It is not a weakly prime, because it can be changed into another prime (2523709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1261869 + 1261870.

It is an arithmetic number, because the mean of its divisors is an integer number (1261870).

2^2523739 is an apocalyptic number.

2523739 is a deficient number, since it is larger than the sum of its proper divisors (1).

2523739 is an equidigital number, since it uses as much as digits as its factorization.

2523739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 31.

The square root of 2523739 is about 1588.6280244286. The cubic root of 2523739 is about 136.1491119712.

The spelling of 2523739 in words is "two million, five hundred twenty-three thousand, seven hundred thirty-nine".