2515997 has 8 divisors (see below), whose sum is σ = 2767872. Its totient is φ = 2268000.

The previous prime is 2515967. The next prime is 2516021. The reversal of 2515997 is 7995152.

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 2515997 - 2¹⁴ = 2499613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2515997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2515907) 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, 497 + ... + 2297.

It is an arithmetic number, because the mean of its divisors is an integer number (345984).

2^2515997 is an apocalyptic number.

It is an amenable number.

2515997 is a deficient number, since it is larger than the sum of its proper divisors (251875).

2515997 is a wasteful number, since it uses less digits than its factorization.

2515997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939.

The product of its digits is 28350, while the sum is 38.

The square root of 2515997 is about 1586.1894590496. The cubic root of 2515997 is about 136.0097491569.

The spelling of 2515997 in words is "two million, five hundred fifteen thousand, nine hundred ninety-seven".