55807146 has 24 divisors (see below), whose sum is σ = 122116644. Its totient is φ = 18417600.

The previous prime is 55807139. The next prime is 55807159. The reversal of 55807146 is 64170855.

55807146 is a `hidden beast` number, since 5 + 580 + 71 + 4 + 6 = 666.

55807146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 55666521 + 140625 = 7461^2 + 375^2 .

It is a super-2 number, since 2×55807146² = 6228875089330632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55807146.

It is an unprimeable number.

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, 13531 + ... + 17166.

Almost surely, 2^55807146 is an apocalyptic number.

55807146 is an abundant number, since it is smaller than the sum of its proper divisors (66309498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55807146 is a wasteful number, since it uses less digits than its factorization.

55807146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30806 (or 30803 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 55807146 is about 7470.4180605907. The cubic root of 55807146 is about 382.1465452015.

The spelling of 55807146 in words is "fifty-five million, eight hundred seven thousand, one hundred forty-six".