2253691 has 8 divisors (see below), whose sum is σ = 2472768. Its totient is φ = 2037000.

The previous prime is 2253683. The next prime is 2253703. The reversal of 2253691 is 1963522.

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

It is a cyclic number.

It is not a de Polignac number, because 2253691 - 2³ = 2253683 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2253091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1836 + ... + 2806.

It is an arithmetic number, because the mean of its divisors is an integer number (309096).

2^2253691 is an apocalyptic number.

2253691 is a deficient number, since it is larger than the sum of its proper divisors (219077).

2253691 is a wasteful number, since it uses less digits than its factorization.

2253691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193.

The product of its digits is 3240, while the sum is 28.

The square root of 2253691 is about 1501.2298291734. The cubic root of 2253691 is about 131.1086835762.

It can be divided in two parts, 225 and 3691, that added together give a triangular number (3916 = T₈₈).

The spelling of 2253691 in words is "two million, two hundred fifty-three thousand, six hundred ninety-one".