11520901 has 4 divisors (see below), whose sum is σ = 13166752. Its totient is φ = 9875052.

The previous prime is 11520889. The next prime is 11520911. The reversal of 11520901 is 10902511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11520901 - 2⁵ = 11520869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11520911) 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, 822915 + ... + 822928.

It is an arithmetic number, because the mean of its divisors is an integer number (3291688).

Almost surely, 2^11520901 is an apocalyptic number.

It is an amenable number.

11520901 is a deficient number, since it is larger than the sum of its proper divisors (1645851).

11520901 is an equidigital number, since it uses as much as digits as its factorization.

11520901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645850.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 11520901 is about 3394.2452769357. The cubic root of 11520901 is about 225.8545347881.

It can be divided in two parts, 11520 and 901, that added together give a palindrome (12421).

The spelling of 11520901 in words is "eleven million, five hundred twenty thousand, nine hundred one".