152214217 has 4 divisors (see below), whose sum is σ = 152987076. Its totient is φ = 151441360.

The previous prime is 152214197. The next prime is 152214229. The reversal of 152214217 is 712412251.

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 77633721 + 74580496 = 8811^2 + 8636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-152214217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 152214191 and 152214200.

It is not an unprimeable number, because it can be changed into a prime (152214317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386134 + ... + 386527.

It is an arithmetic number, because the mean of its divisors is an integer number (38246769).

Almost surely, 2^152214217 is an apocalyptic number.

It is an amenable number.

152214217 is a deficient number, since it is larger than the sum of its proper divisors (772859).

152214217 is an equidigital number, since it uses as much as digits as its factorization.

152214217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772858.

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

The square root of 152214217 is about 12337.5125937119. The cubic root of 152214217 is about 533.9309212686.

Adding to 152214217 its reverse (712412251), we get a palindrome (864626468).

It can be divided in two parts, 152 and 214217, that added together give a square (214369 = 463²).

The spelling of 152214217 in words is "one hundred fifty-two million, two hundred fourteen thousand, two hundred seventeen".