152090221 has 2 divisors, whose sum is σ = 152090222. Its totient is φ = 152090220.

The previous prime is 152090189. The next prime is 152090243. The reversal of 152090221 is 122090251.

It is an a-pointer prime, because the next prime (152090243) can be obtained adding 152090221 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151634596 + 455625 = 12314^2 + 675^2 .

It is a cyclic number.

It is not a de Polignac number, because 152090221 - 2⁵ = 152090189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 152090192 and 152090201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152090251) 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, 76045110 + 76045111.

It is an arithmetic number, because the mean of its divisors is an integer number (76045111).

Almost surely, 2^152090221 is an apocalyptic number.

It is an amenable number.

152090221 is a deficient number, since it is larger than the sum of its proper divisors (1).

152090221 is an equidigital number, since it uses as much as digits as its factorization.

152090221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 152090221 is about 12332.4864078579. The cubic root of 152090221 is about 533.7858991516.

The spelling of 152090221 in words is "one hundred fifty-two million, ninety thousand, two hundred twenty-one".