55808929 has 4 divisors (see below), whose sum is σ = 60882480. Its totient is φ = 50735380.

The previous prime is 55808899. The next prime is 55808933. The reversal of 55808929 is 92980855.

55808929 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55808929 is a prime.

It is a super-2 number, since 2×55808929² = 6229273112254082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55808989) 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 3 ways as a sum of consecutive naturals, for example, 2536759 + ... + 2536780.

It is an arithmetic number, because the mean of its divisors is an integer number (15220620).

Almost surely, 2^55808929 is an apocalyptic number.

It is an amenable number.

55808929 is a deficient number, since it is larger than the sum of its proper divisors (5073551).

55808929 is a wasteful number, since it uses less digits than its factorization.

55808929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5073550.

The product of its (nonzero) digits is 259200, while the sum is 46.

The square root of 55808929 is about 7470.5373970016. The cubic root of 55808929 is about 382.1506149314.

The spelling of 55808929 in words is "fifty-five million, eight hundred eight thousand, nine hundred twenty-nine".