2261953 has 4 divisors (see below), whose sum is σ = 2265988. Its totient is φ = 2257920.

The previous prime is 2261933. The next prime is 2261993. The reversal of 2261953 is 3591622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3591622 = 2 ⋅1795811.

It can be written as a sum of positive squares in 2 ways, for example, as 1227664 + 1034289 = 1108^2 + 1017^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2261953 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261933) 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, 1008 + ... + 2353.

It is an arithmetic number, because the mean of its divisors is an integer number (566497).

It is a Poulet number, since it divides 2^2261952-1.

2^2261953 is an apocalyptic number.

It is an amenable number.

2261953 is a deficient number, since it is larger than the sum of its proper divisors (4035).

2261953 is an equidigital number, since it uses as much as digits as its factorization.

2261953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4034.

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

The square root of 2261953 is about 1503.9790557052. The cubic root of 2261953 is about 131.2687023991.

The spelling of 2261953 in words is "two million, two hundred sixty-one thousand, nine hundred fifty-three".