2516261 has 4 divisors (see below), whose sum is σ = 2745024. Its totient is φ = 2287500.

The previous prime is 2516257. The next prime is 2516263. The reversal of 2516261 is 1626152.

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 2516261 - 2² = 2516257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2516263) 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, 114365 + ... + 114386.

It is an arithmetic number, because the mean of its divisors is an integer number (686256).

2^2516261 is an apocalyptic number.

It is an amenable number.

2516261 is a deficient number, since it is larger than the sum of its proper divisors (228763).

2516261 is a wasteful number, since it uses less digits than its factorization.

2516261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228762.

The product of its digits is 720, while the sum is 23.

The square root of 2516261 is about 1586.2726751728. The cubic root of 2516261 is about 136.0145060940.

The spelling of 2516261 in words is "two million, five hundred sixteen thousand, two hundred sixty-one".