11295981 has 6 divisors (see below), whose sum is σ = 16316430. Its totient is φ = 7530648.

The previous prime is 11295979. The next prime is 11295983. The reversal of 11295981 is 18959211.

It is an interprime number because it is at equal distance from previous prime (11295979) and next prime (11295983).

It can be written as a sum of positive squares in only one way, i.e., 10458756 + 837225 = 3234^2 + 915^2 .

It is not a de Polignac number, because 11295981 - 2¹ = 11295979 is a prime.

It is a super-2 number, since 2×11295981² = 255198373504722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11295983) 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, 627546 + ... + 627563.

It is an arithmetic number, because the mean of its divisors is an integer number (2719405).

Almost surely, 2^11295981 is an apocalyptic number.

It is an amenable number.

11295981 is a deficient number, since it is larger than the sum of its proper divisors (5020449).

11295981 is a wasteful number, since it uses less digits than its factorization.

11295981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255115 (or 1255112 counting only the distinct ones).

The product of its digits is 6480, while the sum is 36.

The square root of 11295981 is about 3360.9494194349. The cubic root of 11295981 is about 224.3750956567.

The spelling of 11295981 in words is "eleven million, two hundred ninety-five thousand, nine hundred eighty-one".