199534051 has 4 divisors (see below), whose sum is σ = 199622704. Its totient is φ = 199445400.

The previous prime is 199534043. The next prime is 199534063. The reversal of 199534051 is 150435991.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150435991 = 73 ⋅2060767.

It is a cyclic number.

It is not a de Polignac number, because 199534051 - 2³ = 199534043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 199534051.

It is not an unprimeable number, because it can be changed into a prime (199534001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40860 + ... + 45481.

It is an arithmetic number, because the mean of its divisors is an integer number (49905676).

Almost surely, 2^199534051 is an apocalyptic number.

199534051 is a deficient number, since it is larger than the sum of its proper divisors (88653).

199534051 is an equidigital number, since it uses as much as digits as its factorization.

199534051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88652.

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 199534051 is about 14125.6522327289. The cubic root of 199534051 is about 584.3490467889.

It can be divided in two parts, 1995 and 34051, that added together give a triangular number (36046 = T₂₆₈).

The spelling of 199534051 in words is "one hundred ninety-nine million, five hundred thirty-four thousand, fifty-one".