151530391 has 2 divisors, whose sum is σ = 151530392. Its totient is φ = 151530390.

The previous prime is 151530373. The next prime is 151530427. The reversal of 151530391 is 193035151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 151530391 - 2⁹ = 151529879 is a prime.

It is a super-2 number, since 2×151530391² = 45922918793225762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151530311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75765195 + 75765196.

It is an arithmetic number, because the mean of its divisors is an integer number (75765196).

Almost surely, 2^151530391 is an apocalyptic number.

151530391 is a deficient number, since it is larger than the sum of its proper divisors (1).

151530391 is an equidigital number, since it uses as much as digits as its factorization.

151530391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2025, while the sum is 28.

The square root of 151530391 is about 12309.7681131693. The cubic root of 151530391 is about 533.1301551159.

The spelling of 151530391 in words is "one hundred fifty-one million, five hundred thirty thousand, three hundred ninety-one".