55599955 has 8 divisors (see below), whose sum is σ = 67311072. Its totient is φ = 44085888.

The previous prime is 55599953. The next prime is 55599959. The reversal of 55599955 is 55999555.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55599955 - 2¹ = 55599953 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (55599953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48639 + ... + 49768.

It is an arithmetic number, because the mean of its divisors is an integer number (8413884).

Almost surely, 2^55599955 is an apocalyptic number.

55599955 is a deficient number, since it is larger than the sum of its proper divisors (11711117).

55599955 is a wasteful number, since it uses less digits than its factorization.

55599955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98525.

The product of its digits is 2278125, while the sum is 52.

The square root of 55599955 is about 7456.5377354373. The cubic root of 55599955 is about 381.6730364702.

The spelling of 55599955 in words is "fifty-five million, five hundred ninety-nine thousand, nine hundred fifty-five".