2472921 has 12 divisors (see below), whose sum is σ = 3896880. Its totient is φ = 1498680.

The previous prime is 2472919. The next prime is 2472929. The reversal of 2472921 is 1292742.

It is not a de Polignac number, because 2472921 - 2¹ = 2472919 is a prime.

It is a super-2 number, since 2×2472921² = 12230676544482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2472929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12391 + ... + 12588.

It is an arithmetic number, because the mean of its divisors is an integer number (324740).

2^2472921 is an apocalyptic number.

It is an amenable number.

2472921 is a deficient number, since it is larger than the sum of its proper divisors (1423959).

2472921 is a wasteful number, since it uses less digits than its factorization.

2472921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24996 (or 24993 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 2472921 is about 1572.5523838652. The cubic root of 2472921 is about 135.2290760907.

The spelling of 2472921 in words is "two million, four hundred seventy-two thousand, nine hundred twenty-one".