152412217 has 4 divisors (see below), whose sum is σ = 152451556. Its totient is φ = 152372880.

The previous prime is 152412209. The next prime is 152412223. The reversal of 152412217 is 712214251.

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 131882256 + 20529961 = 11484^2 + 4531^2 .

It is a cyclic number.

It is not a de Polignac number, because 152412217 - 2³ = 152412209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 152412191 and 152412200.

It is not an unprimeable number, because it can be changed into a prime (152412017) 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 in 3 ways as a sum of consecutive naturals, for example, 13134 + ... + 21847.

It is an arithmetic number, because the mean of its divisors is an integer number (38112889).

Almost surely, 2^152412217 is an apocalyptic number.

It is an amenable number.

152412217 is a deficient number, since it is larger than the sum of its proper divisors (39339).

152412217 is an equidigital number, since it uses as much as digits as its factorization.

152412217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39338.

The product of its digits is 1120, while the sum is 25.

The square root of 152412217 is about 12345.5342938246. The cubic root of 152412217 is about 534.1623331086.

Adding to 152412217 its reverse (712214251), we get a palindrome (864626468).

The spelling of 152412217 in words is "one hundred fifty-two million, four hundred twelve thousand, two hundred seventeen".