11473551 has 12 divisors (see below), whose sum is σ = 16845400. Its totient is φ = 7523280.

The previous prime is 11473543. The next prime is 11473571. The reversal of 11473551 is 15537411.

It is not a de Polignac number, because 11473551 - 2³ = 11473543 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 (11473541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9901 + ... + 10998.

Almost surely, 2^11473551 is an apocalyptic number.

11473551 is a deficient number, since it is larger than the sum of its proper divisors (5371849).

11473551 is a wasteful number, since it uses less digits than its factorization.

11473551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20966 (or 20963 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 11473551 is about 3387.2630544438. The cubic root of 11473551 is about 225.5446951162.

The spelling of 11473551 in words is "eleven million, four hundred seventy-three thousand, five hundred fifty-one".