55199719 has 8 divisors (see below), whose sum is σ = 55657728. Its totient is φ = 54744120.

The previous prime is 55199717. The next prime is 55199743. The reversal of 55199719 is 91799155.

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 55199719 - 2¹ = 55199717 is a prime.

It is a super-2 number, since 2×55199719² = 6094017955357922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55199717) 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, 93744 + ... + 94330.

It is an arithmetic number, because the mean of its divisors is an integer number (6957216).

Almost surely, 2^55199719 is an apocalyptic number.

55199719 is a deficient number, since it is larger than the sum of its proper divisors (458009).

55199719 is a wasteful number, since it uses less digits than its factorization.

55199719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205.

The product of its digits is 127575, while the sum is 46.

The square root of 55199719 is about 7429.6513377143. The cubic root of 55199719 is about 380.7550063026.

The spelling of 55199719 in words is "fifty-five million, one hundred ninety-nine thousand, seven hundred nineteen".