2501157 has 4 divisors (see below), whose sum is σ = 3334880. Its totient is φ = 1667436.

The previous prime is 2501143. The next prime is 2501171. The reversal of 2501157 is 7511052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2501143) and next prime (2501171).

It is not a de Polignac number, because 2501157 - 2¹⁶ = 2435621 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2501137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416857 + ... + 416862.

It is an arithmetic number, because the mean of its divisors is an integer number (833720).

2^2501157 is an apocalyptic number.

It is an amenable number.

2501157 is a deficient number, since it is larger than the sum of its proper divisors (833723).

2501157 is an equidigital number, since it uses as much as digits as its factorization.

2501157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833722.

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 2501157 is about 1581.5046632875. The cubic root of 2501157 is about 135.7418148085.

The spelling of 2501157 in words is "two million, five hundred one thousand, one hundred fifty-seven".