2501997 has 4 divisors (see below), whose sum is σ = 3336000. Its totient is φ = 1667996.

The previous prime is 2501987. The next prime is 2501999. The reversal of 2501997 is 7991052.

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 a cyclic number.

It is not a de Polignac number, because 2501997 - 2¹⁰ = 2500973 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2501999) 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, 416997 + ... + 417002.

It is an arithmetic number, because the mean of its divisors is an integer number (834000).

2^2501997 is an apocalyptic number.

It is an amenable number.

2501997 is a deficient number, since it is larger than the sum of its proper divisors (834003).

2501997 is an equidigital number, since it uses as much as digits as its factorization.

2501997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834002.

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 2501997 is about 1581.7702108714. The cubic root of 2501997 is about 135.7570091582.

The spelling of 2501997 in words is "two million, five hundred one thousand, nine hundred ninety-seven".