151402991 has 2 divisors, whose sum is σ = 151402992. Its totient is φ = 151402990.

The previous prime is 151402961. The next prime is 151403011. The reversal of 151402991 is 199204151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 151402991 - 2¹⁴ = 151386607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151402921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75701495 + 75701496.

It is an arithmetic number, because the mean of its divisors is an integer number (75701496).

Almost surely, 2^151402991 is an apocalyptic number.

151402991 is a deficient number, since it is larger than the sum of its proper divisors (1).

151402991 is an equidigital number, since it uses as much as digits as its factorization.

151402991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 151402991 is about 12304.5922728061. The cubic root of 151402991 is about 532.9807025317.

The spelling of 151402991 in words is "one hundred fifty-one million, four hundred two thousand, nine hundred ninety-one".