2520637 has 4 divisors (see below), whose sum is σ = 2880736. Its totient is φ = 2160540.

The previous prime is 2520631. The next prime is 2520649. The reversal of 2520637 is 7360252.

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 2520637 - 2³ = 2520629 is a prime.

It is a super-2 number, since 2×2520637² = 12707221771538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520631) 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, 180039 + ... + 180052.

It is an arithmetic number, because the mean of its divisors is an integer number (720184).

2^2520637 is an apocalyptic number.

It is an amenable number.

2520637 is a deficient number, since it is larger than the sum of its proper divisors (360099).

2520637 is an equidigital number, since it uses as much as digits as its factorization.

2520637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360098.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 2520637 is about 1587.6514101024. The cubic root of 2520637 is about 136.0933075083.

Adding to 2520637 its reverse (7360252), we get a palindrome (9880889).

The spelling of 2520637 in words is "two million, five hundred twenty thousand, six hundred thirty-seven".