151420091 has 4 divisors (see below), whose sum is σ = 151447800. Its totient is φ = 151392384.

The previous prime is 151420081. The next prime is 151420103. The reversal of 151420091 is 190024151.

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: 190024151 = 79 ⋅2405369.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151420091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151420001) 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, 2621 + ... + 17598.

It is an arithmetic number, because the mean of its divisors is an integer number (37861950).

Almost surely, 2^151420091 is an apocalyptic number.

151420091 is a deficient number, since it is larger than the sum of its proper divisors (27709).

151420091 is an equidigital number, since it uses as much as digits as its factorization.

151420091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27708.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 151420091 is about 12305.2871157076. The cubic root of 151420091 is about 533.0007673641. Note that the first 3 decimals are identical.

The spelling of 151420091 in words is "one hundred fifty-one million, four hundred twenty thousand, ninety-one".