2521312 has 12 divisors (see below), whose sum is σ = 4963896. Its totient is φ = 1260640.

The previous prime is 2521307. The next prime is 2521327. The reversal of 2521312 is 2131252.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39364 + ... + 39427.

It is an arithmetic number, because the mean of its divisors is an integer number (413658).

2^2521312 is an apocalyptic number.

It is an amenable number.

2521312 is a deficient number, since it is larger than the sum of its proper divisors (2442584).

2521312 is an equidigital number, since it uses as much as digits as its factorization.

2521312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78801 (or 78793 counting only the distinct ones).

The product of its digits is 120, while the sum is 16.

The square root of 2521312 is about 1587.8639740230. The cubic root of 2521312 is about 136.1054545415.

Adding to 2521312 its reverse (2131252), we get a palindrome (4652564).

The spelling of 2521312 in words is "two million, five hundred twenty-one thousand, three hundred twelve".