151140217 has 4 divisors (see below), whose sum is σ = 160030836. Its totient is φ = 142249600.

The previous prime is 151140179. The next prime is 151140247. The reversal of 151140217 is 712041151.

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

It can be written as a sum of positive squares in 2 ways, for example, as 139688761 + 11451456 = 11819^2 + 3384^2 .

It is a cyclic number.

It is not a de Polignac number, because 151140217 - 2⁷ = 151140089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151140247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4445284 + ... + 4445317.

It is an arithmetic number, because the mean of its divisors is an integer number (40007709).

Almost surely, 2^151140217 is an apocalyptic number.

151140217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

151140217 is a deficient number, since it is larger than the sum of its proper divisors (8890619).

151140217 is an equidigital number, since it uses as much as digits as its factorization.

151140217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8890618.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 151140217 is about 12293.9097523937. The cubic root of 151140217 is about 532.6721780794.

Adding to 151140217 its reverse (712041151), we get a palindrome (863181368).

The spelling of 151140217 in words is "one hundred fifty-one million, one hundred forty thousand, two hundred seventeen".