152215321 has 2 divisors, whose sum is σ = 152215322. Its totient is φ = 152215320.

The previous prime is 152215309. The next prime is 152215333. The reversal of 152215321 is 123512251.

It is a balanced prime because it is at equal distance from previous prime (152215309) and next prime (152215333).

It can be written as a sum of positive squares in only one way, i.e., 87235600 + 64979721 = 9340^2 + 8061^2 .

It is a cyclic number.

It is not a de Polignac number, because 152215321 - 2²⁷ = 17997593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 152215292 and 152215301.

It is not a weakly prime, because it can be changed into another prime (152215351) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76107660 + 76107661.

It is an arithmetic number, because the mean of its divisors is an integer number (76107661).

Almost surely, 2^152215321 is an apocalyptic number.

It is an amenable number.

152215321 is a deficient number, since it is larger than the sum of its proper divisors (1).

152215321 is an equidigital number, since it uses as much as digits as its factorization.

152215321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 22.

The square root of 152215321 is about 12337.5573352265. The cubic root of 152215321 is about 533.9322121211.

Adding to 152215321 its reverse (123512251), we get a palindrome (275727572).

The spelling of 152215321 in words is "one hundred fifty-two million, two hundred fifteen thousand, three hundred twenty-one".