2557516 has 24 divisors (see below), whose sum is σ = 4868640. Its totient is φ = 1168512.

The previous prime is 2557507. The next prime is 2557517. The reversal of 2557516 is 6157552.

It is not an unprimeable number, because it can be changed into a prime (2557517) 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, 6945 + ... + 7303.

It is an arithmetic number, because the mean of its divisors is an integer number (202860).

2^2557516 is an apocalyptic number.

2557516 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2557516 is a deficient number, since it is larger than the sum of its proper divisors (2311124).

2557516 is a wasteful number, since it uses less digits than its factorization.

2557516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513 (or 511 counting only the distinct ones).

The product of its digits is 10500, while the sum is 31.

The square root of 2557516 is about 1599.2235616073. The cubic root of 2557516 is about 136.7538157881.

The spelling of 2557516 in words is "two million, five hundred fifty-seven thousand, five hundred sixteen".