151920091 has 4 divisors (see below), whose sum is σ = 152006800. Its totient is φ = 151833384.

The previous prime is 151920089. The next prime is 151920107. The reversal of 151920091 is 190029151.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 151920091 - 2¹ = 151920089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151920001) 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, 40671 + ... + 44248.

It is an arithmetic number, because the mean of its divisors is an integer number (38001700).

Almost surely, 2^151920091 is an apocalyptic number.

151920091 is a deficient number, since it is larger than the sum of its proper divisors (86709).

151920091 is an equidigital number, since it uses as much as digits as its factorization.

151920091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86708.

The product of its (nonzero) digits is 810, while the sum is 28.

The square root of 151920091 is about 12325.5868420128. The cubic root of 151920091 is about 533.5867917249.

The spelling of 151920091 in words is "one hundred fifty-one million, nine hundred twenty thousand, ninety-one".