55123199 has 16 divisors (see below), whose sum is σ = 59520000. Its totient is φ = 50893920.

The previous prime is 55123181. The next prime is 55123217. The reversal of 55123199 is 99132155.

It is an interprime number because it is at equal distance from previous prime (55123181) and next prime (55123217).

It is a cyclic number.

It is not a de Polignac number, because 55123199 - 2⁸ = 55122943 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 (55123109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230522 + ... + 230760.

It is an arithmetic number, because the mean of its divisors is an integer number (3720000).

Almost surely, 2^55123199 is an apocalyptic number.

55123199 is a deficient number, since it is larger than the sum of its proper divisors (4396801).

55123199 is a wasteful number, since it uses less digits than its factorization.

55123199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518.

The product of its digits is 12150, while the sum is 35.

The square root of 55123199 is about 7424.4999158192. The cubic root of 55123199 is about 380.5789858031.

The spelling of 55123199 in words is "fifty-five million, one hundred twenty-three thousand, one hundred ninety-nine".