11897251 has 4 divisors (see below), whose sum is σ = 12150432. Its totient is φ = 11644072.

The previous prime is 11897231. The next prime is 11897261. The reversal of 11897251 is 15279811.

It is a happy number.

11897251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11897251 - 2⁵ = 11897219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11897231) 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, 126520 + ... + 126613.

It is an arithmetic number, because the mean of its divisors is an integer number (3037608).

Almost surely, 2^11897251 is an apocalyptic number.

11897251 is a deficient number, since it is larger than the sum of its proper divisors (253181).

11897251 is an equidigital number, since it uses as much as digits as its factorization.

11897251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253180.

The product of its digits is 5040, while the sum is 34.

The square root of 11897251 is about 3449.2391914740. The cubic root of 11897251 is about 228.2875399075.

The spelling of 11897251 in words is "eleven million, eight hundred ninety-seven thousand, two hundred fifty-one".