199051457 has 8 divisors (see below), whose sum is σ = 217419552. Its totient is φ = 180728800.

The previous prime is 199051451. The next prime is 199051459. The reversal of 199051457 is 754150991.

199051457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 199051457 - 2⁴ = 199051441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199051451) 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, 1844 + ... + 20037.

It is an arithmetic number, because the mean of its divisors is an integer number (27177444).

Almost surely, 2^199051457 is an apocalyptic number.

It is an amenable number.

199051457 is a deficient number, since it is larger than the sum of its proper divisors (18368095).

199051457 is a wasteful number, since it uses less digits than its factorization.

199051457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22719.

The product of its (nonzero) digits is 56700, while the sum is 41.

The square root of 199051457 is about 14108.5597067879. The cubic root of 199051457 is about 583.8775633504.

The spelling of 199051457 in words is "one hundred ninety-nine million, fifty-one thousand, four hundred fifty-seven".