145567399 has 2 divisors, whose sum is σ = 145567400. Its totient is φ = 145567398.

The previous prime is 145567397. The next prime is 145567439. The reversal of 145567399 is 993765541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145567399 - 2¹ = 145567397 is a prime.

Together with 145567397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145567393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72783699 + 72783700.

It is an arithmetic number, because the mean of its divisors is an integer number (72783700).

Almost surely, 2^145567399 is an apocalyptic number.

145567399 is a deficient number, since it is larger than the sum of its proper divisors (1).

145567399 is an equidigital number, since it uses as much as digits as its factorization.

145567399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1020600, while the sum is 49.

The square root of 145567399 is about 12065.1315367882. The cubic root of 145567399 is about 526.0431552443.

The spelling of 145567399 in words is "one hundred forty-five million, five hundred sixty-seven thousand, three hundred ninety-nine".