11258881 has 4 divisors (see below), whose sum is σ = 11426992. Its totient is φ = 11090772.

The previous prime is 11258857. The next prime is 11258909. The reversal of 11258881 is 18885211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18885211 = 47 ⋅401813.

It is a cyclic number.

It is not a de Polignac number, because 11258881 - 2²¹ = 9161729 is a prime.

It is a super-2 number, since 2×11258881² = 253524802744322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11258801) 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, 83955 + ... + 84088.

It is an arithmetic number, because the mean of its divisors is an integer number (2856748).

Almost surely, 2^11258881 is an apocalyptic number.

It is an amenable number.

11258881 is a deficient number, since it is larger than the sum of its proper divisors (168111).

11258881 is an equidigital number, since it uses as much as digits as its factorization.

11258881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168110.

The product of its digits is 5120, while the sum is 34.

The square root of 11258881 is about 3355.4256063874. The cubic root of 11258881 is about 224.1291838276.

It can be divided in two parts, 11 and 258881, that multiplied together give a triangular number (2847691 = T₂₃₈₆).

The spelling of 11258881 in words is "eleven million, two hundred fifty-eight thousand, eight hundred eighty-one".