152487221 has 2 divisors, whose sum is σ = 152487222. Its totient is φ = 152487220.

The previous prime is 152487193. The next prime is 152487253. The reversal of 152487221 is 122784251.

It is an a-pointer prime, because the next prime (152487253) can be obtained adding 152487221 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144336196 + 8151025 = 12014^2 + 2855^2 .

It is a cyclic number.

It is not a de Polignac number, because 152487221 - 2⁶ = 152487157 is a prime.

It is equal to p_8576132 and since 152487221 and 8576132 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152487281) 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 as a sum of consecutive naturals, namely, 76243610 + 76243611.

It is an arithmetic number, because the mean of its divisors is an integer number (76243611).

Almost surely, 2^152487221 is an apocalyptic number.

It is an amenable number.

152487221 is a deficient number, since it is larger than the sum of its proper divisors (1).

152487221 is an equidigital number, since it uses as much as digits as its factorization.

152487221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8960, while the sum is 32.

The square root of 152487221 is about 12348.5716178026. The cubic root of 152487221 is about 534.2499414429.

The spelling of 152487221 in words is "one hundred fifty-two million, four hundred eighty-seven thousand, two hundred twenty-one".