11772551 has 8 divisors (see below), whose sum is σ = 14245920. Its totient is φ = 9497088.

The previous prime is 11772539. The next prime is 11772559. The reversal of 11772551 is 15527711.

11772551 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11772551 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 (11772559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49346 + ... + 49583.

It is an arithmetic number, because the mean of its divisors is an integer number (1780740).

Almost surely, 2^11772551 is an apocalyptic number.

11772551 is a deficient number, since it is larger than the sum of its proper divisors (2473369).

11772551 is an equidigital number, since it uses as much as digits as its factorization.

11772551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98953.

The product of its digits is 2450, while the sum is 29.

The square root of 11772551 is about 3431.1151248537. The cubic root of 11772551 is about 227.4871449485.

The spelling of 11772551 in words is "eleven million, seven hundred seventy-two thousand, five hundred fifty-one".