152222621 has 2 divisors, whose sum is σ = 152222622. Its totient is φ = 152222620.

The previous prime is 152222611. The next prime is 152222657. The reversal of 152222621 is 126222251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125328025 + 26894596 = 11195^2 + 5186^2 .

It is a cyclic number.

It is not a de Polignac number, because 152222621 - 2⁶ = 152222557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152222611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76111310 + 76111311.

It is an arithmetic number, because the mean of its divisors is an integer number (76111311).

Almost surely, 2^152222621 is an apocalyptic number.

It is an amenable number.

152222621 is a deficient number, since it is larger than the sum of its proper divisors (1).

152222621 is an equidigital number, since it uses as much as digits as its factorization.

152222621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 23.

The square root of 152222621 is about 12337.8531763026. The cubic root of 152222621 is about 533.9407474924.

Adding to 152222621 its reverse (126222251), we get a palindrome (278444872).

The spelling of 152222621 in words is "one hundred fifty-two million, two hundred twenty-two thousand, six hundred twenty-one".