55605873 has 4 divisors (see below), whose sum is σ = 74141168. Its totient is φ = 37070580.

The previous prime is 55605871. The next prime is 55605877. The reversal of 55605873 is 37850655.

55605873 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 not a de Polignac number, because 55605873 - 2¹ = 55605871 is a prime.

It is a super-2 number, since 2×55605873² = 6184026224184258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55605871) 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, 9267643 + ... + 9267648.

It is an arithmetic number, because the mean of its divisors is an integer number (18535292).

Almost surely, 2^55605873 is an apocalyptic number.

It is an amenable number.

55605873 is a deficient number, since it is larger than the sum of its proper divisors (18535295).

55605873 is a wasteful number, since it uses less digits than its factorization.

55605873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18535294.

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 55605873 is about 7456.9345578461. The cubic root of 55605873 is about 381.6865776137.

The spelling of 55605873 in words is "fifty-five million, six hundred five thousand, eight hundred seventy-three".