11611257 has 8 divisors (see below), whose sum is σ = 17693376. Its totient is φ = 6634992.

The previous prime is 11611253. The next prime is 11611273. The reversal of 11611257 is 75211611.

11611257 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11611257 - 2² = 11611253 is a prime.

It is a super-3 number, since 3×11611257³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (11611253) 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, 276438 + ... + 276479.

It is an arithmetic number, because the mean of its divisors is an integer number (2211672).

Almost surely, 2^11611257 is an apocalyptic number.

It is an amenable number.

11611257 is a deficient number, since it is larger than the sum of its proper divisors (6082119).

11611257 is an equidigital number, since it uses as much as digits as its factorization.

11611257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552927.

The product of its digits is 420, while the sum is 24.

The square root of 11611257 is about 3407.5294569526. The cubic root of 11611257 is about 226.4434410870.

Adding to 11611257 its reverse (75211611), we get a palindrome (86822868).

The spelling of 11611257 in words is "eleven million, six hundred eleven thousand, two hundred fifty-seven".