55572199 has 4 divisors (see below), whose sum is σ = 56333536. Its totient is φ = 54810864.

The previous prime is 55572137. The next prime is 55572203. The reversal of 55572199 is 99127555.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55572199 - 2¹⁵ = 55539431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55572499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380559 + ... + 380704.

It is an arithmetic number, because the mean of its divisors is an integer number (14083384).

Almost surely, 2^55572199 is an apocalyptic number.

55572199 is a deficient number, since it is larger than the sum of its proper divisors (761337).

55572199 is an equidigital number, since it uses as much as digits as its factorization.

55572199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761336.

The product of its digits is 141750, while the sum is 43.

The square root of 55572199 is about 7454.6763175875. The cubic root of 55572199 is about 381.6095143558.

The spelling of 55572199 in words is "fifty-five million, five hundred seventy-two thousand, one hundred ninety-nine".