11285551 has 2 divisors, whose sum is σ = 11285552. Its totient is φ = 11285550.

The previous prime is 11285513. The next prime is 11285557. The reversal of 11285551 is 15558211.

11285551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (15558211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11285551 is a prime.

It is a super-2 number, since 2×11285551² = 254727322747202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11285557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5642775 + 5642776.

It is an arithmetic number, because the mean of its divisors is an integer number (5642776).

Almost surely, 2^11285551 is an apocalyptic number.

11285551 is a deficient number, since it is larger than the sum of its proper divisors (1).

11285551 is an equidigital number, since it uses as much as digits as its factorization.

11285551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2000, while the sum is 28.

The square root of 11285551 is about 3359.3974162043. The cubic root of 11285551 is about 224.3060164301.

The spelling of 11285551 in words is "eleven million, two hundred eighty-five thousand, five hundred fifty-one".