2500917 has 8 divisors (see below), whose sum is σ = 3405696. Its totient is φ = 1631712.

The previous prime is 2500891. The next prime is 2500919. The reversal of 2500917 is 7190052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2500917 - 2¹⁹ = 1976629 is a prime.

2500917 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8728 + ... + 9009.

It is an arithmetic number, because the mean of its divisors is an integer number (425712).

2^2500917 is an apocalyptic number.

It is an amenable number.

2500917 is a deficient number, since it is larger than the sum of its proper divisors (904779).

2500917 is a wasteful number, since it uses less digits than its factorization.

2500917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17787.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 2500917 is about 1581.4287843593. The cubic root of 2500917 is about 135.7374729409.

Adding to 2500917 its reverse (7190052), we get a palindrome (9690969).

The spelling of 2500917 in words is "two million, five hundred thousand, nine hundred seventeen".