2521918 has 8 divisors (see below), whose sum is σ = 4323312. Its totient is φ = 1080816.

The previous prime is 2521901. The next prime is 2521919. The reversal of 2521918 is 8191252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521919) 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, 90055 + ... + 90082.

It is an arithmetic number, because the mean of its divisors is an integer number (540414).

2^2521918 is an apocalyptic number.

2521918 is a deficient number, since it is larger than the sum of its proper divisors (1801394).

2521918 is a wasteful number, since it uses less digits than its factorization.

2521918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180146.

The product of its digits is 1440, while the sum is 28.

The square root of 2521918 is about 1588.0547849492. The cubic root of 2521918 is about 136.1163580312.

The spelling of 2521918 in words is "two million, five hundred twenty-one thousand, nine hundred eighteen".