11730551 has 12 divisors (see below), whose sum is σ = 13980960. Its totient is φ = 9807840.

The previous prime is 11730547. The next prime is 11730553. The reversal of 11730551 is 15503711.

11730551 = 84² + 85² + ... + 329².

It is not a de Polignac number, because 11730551 - 2² = 11730547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11730553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 911 + ... + 4928.

It is an arithmetic number, because the mean of its divisors is an integer number (1165080).

Almost surely, 2^11730551 is an apocalyptic number.

11730551 is a deficient number, since it is larger than the sum of its proper divisors (2250409).

11730551 is an equidigital number, since it uses as much as digits as its factorization.

11730551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5894 (or 5887 counting only the distinct ones).

The product of its (nonzero) digits is 525, while the sum is 23.

The square root of 11730551 is about 3424.9891970633. The cubic root of 11730551 is about 227.2162932899.

The spelling of 11730551 in words is "eleven million, seven hundred thirty thousand, five hundred fifty-one".