152321999 has 2 divisors, whose sum is σ = 152322000. Its totient is φ = 152321998.

The previous prime is 152321957. The next prime is 152322013. The reversal of 152321999 is 999123251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 152321999 - 2¹² = 152317903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152323999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76160999 + 76161000.

It is an arithmetic number, because the mean of its divisors is an integer number (76161000).

Almost surely, 2^152321999 is an apocalyptic number.

152321999 is a deficient number, since it is larger than the sum of its proper divisors (1).

152321999 is an equidigital number, since it uses as much as digits as its factorization.

152321999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43740, while the sum is 41.

The square root of 152321999 is about 12341.8798811202. The cubic root of 152321999 is about 534.0569159925.

The spelling of 152321999 in words is "one hundred fifty-two million, three hundred twenty-one thousand, nine hundred ninety-nine".