2470921 has 4 divisors (see below), whose sum is σ = 2493700. Its totient is φ = 2448144.

The previous prime is 2470903. The next prime is 2470939. The reversal of 2470921 is 1290742.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2470903) and next prime (2470939).

It can be written as a sum of positive squares in 2 ways, for example, as 2134521 + 336400 = 1461^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 2470921 - 2⁵ = 2470889 is a prime.

It is a super-2 number, since 2×2470921² = 12210901176482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2470961) 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, 11226 + ... + 11443.

It is an arithmetic number, because the mean of its divisors is an integer number (623425).

2^2470921 is an apocalyptic number.

It is an amenable number.

2470921 is a deficient number, since it is larger than the sum of its proper divisors (22779).

2470921 is a wasteful number, since it uses less digits than its factorization.

2470921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22778.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 2470921 is about 1571.9163463747. The cubic root of 2470921 is about 135.1926102948.

The spelling of 2470921 in words is "two million, four hundred seventy thousand, nine hundred twenty-one".