151000091 has 4 divisors (see below), whose sum is σ = 164727384. Its totient is φ = 137272800.

The previous prime is 151000061. The next prime is 151000117. The reversal of 151000091 is 190000151.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151000091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151000051) 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, 6863630 + ... + 6863651.

It is an arithmetic number, because the mean of its divisors is an integer number (41181846).

Almost surely, 2^151000091 is an apocalyptic number.

151000091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

151000091 is a deficient number, since it is larger than the sum of its proper divisors (13727293).

151000091 is a wasteful number, since it uses less digits than its factorization.

151000091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13727292.

The product of its (nonzero) digits is 45, while the sum is 17.

The square root of 151000091 is about 12288.2094301814. The cubic root of 151000091 is about 532.5075091332.

The spelling of 151000091 in words is "one hundred fifty-one million, ninety-one", and thus it is an aban number.