199252455 has 16 divisors (see below), whose sum is σ = 319041504. Its totient is φ = 106188800.

The previous prime is 199252451. The next prime is 199252463. The reversal of 199252455 is 554252991.

It is a happy number.

It is not a de Polignac number, because 199252455 - 2² = 199252451 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199252451) 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, 19867 + ... + 28163.

It is an arithmetic number, because the mean of its divisors is an integer number (19940094).

Almost surely, 2^199252455 is an apocalyptic number.

199252455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

199252455 is a deficient number, since it is larger than the sum of its proper divisors (119789049).

199252455 is a wasteful number, since it uses less digits than its factorization.

199252455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9906.

The product of its digits is 162000, while the sum is 42.

The square root of 199252455 is about 14115.6811737868. The cubic root of 199252455 is about 584.0740263562.

The spelling of 199252455 in words is "one hundred ninety-nine million, two hundred fifty-two thousand, four hundred fifty-five".