11961257 has 16 divisors (see below), whose sum is σ = 15396864. Its totient is φ = 9018000.

The previous prime is 11961223. The next prime is 11961259. The reversal of 11961257 is 75216911.

11961257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11961257 - 2¹² = 11957161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11961259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119 + ... + 4892.

It is an arithmetic number, because the mean of its divisors is an integer number (962304).

Almost surely, 2^11961257 is an apocalyptic number.

It is an amenable number.

11961257 is a deficient number, since it is larger than the sum of its proper divisors (3435607).

11961257 is a wasteful number, since it uses less digits than its factorization.

11961257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5060.

The product of its digits is 3780, while the sum is 32.

The square root of 11961257 is about 3458.5050238506. The cubic root of 11961257 is about 228.6961958520.

The spelling of 11961257 in words is "eleven million, nine hundred sixty-one thousand, two hundred fifty-seven".