11257081 has 8 divisors (see below), whose sum is σ = 12306528. Its totient is φ = 10212000.

The previous prime is 11257079. The next prime is 11257087. The reversal of 11257081 is 18075211.

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 11257081 - 2¹ = 11257079 is a prime.

It is a super-2 number, since 2×11257081² = 253443745281122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11257087) 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, 6861 + ... + 8341.

It is an arithmetic number, because the mean of its divisors is an integer number (1538316).

Almost surely, 2^11257081 is an apocalyptic number.

11257081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11257081 is a deficient number, since it is larger than the sum of its proper divisors (1049447).

11257081 is a wasteful number, since it uses less digits than its factorization.

11257081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183.

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 11257081 is about 3355.1573733582. The cubic root of 11257081 is about 224.1172390635.

The spelling of 11257081 in words is "eleven million, two hundred fifty-seven thousand, eighty-one".