11842551 has 16 divisors (see below), whose sum is σ = 20051200. Its totient is φ = 6767064.

The previous prime is 11842507. The next prime is 11842559. The reversal of 11842551 is 15524811.

It is not a de Polignac number, because 11842551 - 2⁶ = 11842487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11842559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31141 + ... + 31518.

It is an arithmetic number, because the mean of its divisors is an integer number (1253200).

Almost surely, 2^11842551 is an apocalyptic number.

11842551 is a deficient number, since it is larger than the sum of its proper divisors (8208649).

11842551 is an equidigital number, since it uses as much as digits as its factorization.

11842551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62675 (or 62669 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

The square root of 11842551 is about 3441.3007715107. The cubic root of 11842551 is about 227.9371364086.

The spelling of 11842551 in words is "eleven million, eight hundred forty-two thousand, five hundred fifty-one".