11274561 has 6 divisors (see below), whose sum is σ = 16285490. Its totient is φ = 7516368.

The previous prime is 11274551. The next prime is 11274589. The reversal of 11274561 is 16547211.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8088336 + 3186225 = 2844^2 + 1785^2 .

It is not a de Polignac number, because 11274561 - 2⁷ = 11274433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11274511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 626356 + ... + 626373.

Almost surely, 2^11274561 is an apocalyptic number.

It is an amenable number.

11274561 is a deficient number, since it is larger than the sum of its proper divisors (5010929).

11274561 is a wasteful number, since it uses less digits than its factorization.

11274561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252735 (or 1252732 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 11274561 is about 3357.7613077764. The cubic root of 11274561 is about 224.2331821856.

The spelling of 11274561 in words is "eleven million, two hundred seventy-four thousand, five hundred sixty-one".