2557007 has 2 divisors, whose sum is σ = 2557008. Its totient is φ = 2557006.

The previous prime is 2556997. The next prime is 2557013. The reversal of 2557007 is 7007552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2557007 - 2⁴ = 2556991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2557067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278503 + 1278504.

It is an arithmetic number, because the mean of its divisors is an integer number (1278504).

2^2557007 is an apocalyptic number.

2557007 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557007 is an equidigital number, since it uses as much as digits as its factorization.

2557007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2450, while the sum is 26.

The square root of 2557007 is about 1599.0644139621. The cubic root of 2557007 is about 136.7447428816.

The spelling of 2557007 in words is "two million, five hundred fifty-seven thousand, seven".