2519997 has 4 divisors (see below), whose sum is σ = 3360000. Its totient is φ = 1679996.

The previous prime is 2519981. The next prime is 2520017. The reversal of 2519997 is 7999152.

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 2519997 - 2⁴ = 2519981 is a prime.

It is an Ulam number.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2519947) 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, 419997 + ... + 420002.

It is an arithmetic number, because the mean of its divisors is an integer number (840000).

2^2519997 is an apocalyptic number.

It is an amenable number.

2519997 is a deficient number, since it is larger than the sum of its proper divisors (840003).

2519997 is an equidigital number, since it uses as much as digits as its factorization.

2519997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840002.

The product of its digits is 51030, while the sum is 42.

The square root of 2519997 is about 1587.4498417273. The cubic root of 2519997 is about 136.0817883183.

The spelling of 2519997 in words is "two million, five hundred nineteen thousand, nine hundred ninety-seven".