150235991 has 2 divisors, whose sum is σ = 150235992. Its totient is φ = 150235990.

The previous prime is 150235949. The next prime is 150235993. The reversal of 150235991 is 199532051.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 150235991 - 2¹⁴ = 150219607 is a prime.

Together with 150235993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150235993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75117995 + 75117996.

It is an arithmetic number, because the mean of its divisors is an integer number (75117996).

Almost surely, 2^150235991 is an apocalyptic number.

150235991 is a deficient number, since it is larger than the sum of its proper divisors (1).

150235991 is an equidigital number, since it uses as much as digits as its factorization.

150235991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 150235991 is about 12257.0792197815. The cubic root of 150235991 is about 531.6077806571.

The spelling of 150235991 in words is "one hundred fifty million, two hundred thirty-five thousand, nine hundred ninety-one".