151530217 has 2 divisors, whose sum is σ = 151530218. Its totient is φ = 151530216.

The previous prime is 151530193. The next prime is 151530227. The reversal of 151530217 is 712035151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147282496 + 4247721 = 12136^2 + 2061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151530217 is a prime.

It is a super-2 number, since 2×151530217² = 45922813328134178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 151530191 and 151530200.

It is not a weakly prime, because it can be changed into another prime (151530227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75765108 + 75765109.

It is an arithmetic number, because the mean of its divisors is an integer number (75765109).

Almost surely, 2^151530217 is an apocalyptic number.

It is an amenable number.

151530217 is a deficient number, since it is larger than the sum of its proper divisors (1).

151530217 is an equidigital number, since it uses as much as digits as its factorization.

151530217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 151530217 is about 12309.7610456093. The cubic root of 151530217 is about 533.1299510541.

Adding to 151530217 its reverse (712035151), we get a palindrome (863565368).

The spelling of 151530217 in words is "one hundred fifty-one million, five hundred thirty thousand, two hundred seventeen".