2921572 has 12 divisors (see below), whose sum is σ = 5209596. Its totient is φ = 1433120.

The previous prime is 2921563. The next prime is 2921591. The reversal of 2921572 is 2751292.

It can be written as a sum of positive squares in 2 ways, for example, as 1893376 + 1028196 = 1376^2 + 1014^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2921572.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6679 + ... + 7102.

It is an arithmetic number, because the mean of its divisors is an integer number (434133).

2^2921572 is an apocalyptic number.

It is an amenable number.

2921572 is a deficient number, since it is larger than the sum of its proper divisors (2288024).

2921572 is a wasteful number, since it uses less digits than its factorization.

2921572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13838 (or 13836 counting only the distinct ones).

The product of its digits is 2520, while the sum is 28.

The square root of 2921572 is about 1709.2606588815. The cubic root of 2921572 is about 142.9570347065.

The spelling of 2921572 in words is "two million, nine hundred twenty-one thousand, five hundred seventy-two".