11897497 has 4 divisors (see below), whose sum is σ = 12015396. Its totient is φ = 11779600.

The previous prime is 11897489. The next prime is 11897507. The reversal of 11897497 is 79479811.

11897497 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 can be written as a sum of positive squares in 2 ways, for example, as 10634121 + 1263376 = 3261^2 + 1124^2 .

It is a cyclic number.

It is not a de Polignac number, because 11897497 - 2³ = 11897489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11897407) 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, 58798 + ... + 58999.

It is an arithmetic number, because the mean of its divisors is an integer number (3003849).

Almost surely, 2^11897497 is an apocalyptic number.

It is an amenable number.

11897497 is a deficient number, since it is larger than the sum of its proper divisors (117899).

11897497 is a wasteful number, since it uses less digits than its factorization.

11897497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117898.

The product of its digits is 127008, while the sum is 46.

The square root of 11897497 is about 3449.2748513274. The cubic root of 11897497 is about 228.2891133339.

The spelling of 11897497 in words is "eleven million, eight hundred ninety-seven thousand, four hundred ninety-seven".