2091572 has 12 divisors (see below), whose sum is σ = 4183200. Its totient is φ = 896376.

The previous prime is 2091553. The next prime is 2091581. The reversal of 2091572 is 2751902.

2091572 is an admirable number.

It is a super-3 number, since 3×2091572³ = 27449833373425143744, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 37322 + ... + 37377.

It is an arithmetic number, because the mean of its divisors is an integer number (348600).

2^2091572 is an apocalyptic number.

It is an amenable number.

2091572 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2091572 is a wasteful number, since it uses less digits than its factorization.

2091572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74710 (or 74708 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 2091572 is about 1446.2268148531. The cubic root of 2091572 is about 127.8863737727.

The spelling of 2091572 in words is "two million, ninety-one thousand, five hundred seventy-two".