2473021 has 8 divisors (see below), whose sum is σ = 2640320. Its totient is φ = 2309472.

The previous prime is 2473019. The next prime is 2473027. The reversal of 2473021 is 1203742.

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

It is a 4-Lehmer number, since φ(2473021) divides (2473021-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 2473021 - 2¹ = 2473019 is a prime.

It is a super-3 number, since 3×2473021³ = 45373749333596364783, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2473021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2473027) 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 7 ways as a sum of consecutive naturals, for example, 496 + ... + 2278.

It is an arithmetic number, because the mean of its divisors is an integer number (330040).

2^2473021 is an apocalyptic number.

It is an amenable number.

2473021 is a deficient number, since it is larger than the sum of its proper divisors (167299).

2473021 is a wasteful number, since it uses less digits than its factorization.

2473021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 2473021 is about 1572.5841789869. The cubic root of 2473021 is about 135.2308988643.

Adding to 2473021 its reverse (1203742), we get a palindrome (3676763).

The spelling of 2473021 in words is "two million, four hundred seventy-three thousand, twenty-one".