2516431 has 4 divisors (see below), whose sum is σ = 2527200. Its totient is φ = 2505664.

The previous prime is 2516429. The next prime is 2516447. The reversal of 2516431 is 1346152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2516431 - 2¹ = 2516429 is a prime.

It is a super-2 number, since 2×2516431² = 12664849955522, which contains 22 as substring.

It is a Duffinian number.

2516431 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2516401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5026 + ... + 5503.

It is an arithmetic number, because the mean of its divisors is an integer number (631800).

2^2516431 is an apocalyptic number.

2516431 is a deficient number, since it is larger than the sum of its proper divisors (10769).

2516431 is a wasteful number, since it uses less digits than its factorization.

2516431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10768.

The product of its digits is 720, while the sum is 22.

The square root of 2516431 is about 1586.3262590022. The cubic root of 2516431 is about 136.0175690970.

The spelling of 2516431 in words is "two million, five hundred sixteen thousand, four hundred thirty-one".