152201991 has 8 divisors (see below), whose sum is σ = 203090544. Its totient is φ = 101390720.

The previous prime is 152201977. The next prime is 152202019. The reversal of 152201991 is 199102251.

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 152201991 - 2⁶ = 152201927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152201941) 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, 14556 + ... + 22721.

It is an arithmetic number, because the mean of its divisors is an integer number (25386318).

Almost surely, 2^152201991 is an apocalyptic number.

152201991 is a deficient number, since it is larger than the sum of its proper divisors (50888553).

152201991 is a wasteful number, since it uses less digits than its factorization.

152201991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38641.

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 152201991 is about 12337.0171030116. The cubic root of 152201991 is about 533.9166255951.

The spelling of 152201991 in words is "one hundred fifty-two million, two hundred one thousand, nine hundred ninety-one".