2504991 has 8 divisors (see below), whose sum is σ = 3455280. Its totient is φ = 1612352.

The previous prime is 2504987. The next prime is 2505007. The reversal of 2504991 is 1994052.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2504991 - 2² = 2504987 is a prime.

2504991 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2504981) 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, 14310 + ... + 14483.

It is an arithmetic number, because the mean of its divisors is an integer number (431910).

2^2504991 is an apocalyptic number.

2504991 is a deficient number, since it is larger than the sum of its proper divisors (950289).

2504991 is a wasteful number, since it uses less digits than its factorization.

2504991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28825.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 2504991 is about 1582.7163359238. The cubic root of 2504991 is about 135.8111385150.

The spelling of 2504991 in words is "two million, five hundred four thousand, nine hundred ninety-one".