152809445 has 8 divisors (see below), whose sum is σ = 188327544. Its totient is φ = 118943424.

The previous prime is 152809421. The next prime is 152809451. The reversal of 152809445 is 544908251.

It can be written as a sum of positive squares in 4 ways, for example, as 34304449 + 118504996 = 5857^2 + 10886^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 152809445 - 2²⁶ = 85700581 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 152809399 and 152809408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412814 + ... + 413183.

It is an arithmetic number, because the mean of its divisors is an integer number (23540943).

Almost surely, 2^152809445 is an apocalyptic number.

It is an amenable number.

152809445 is a deficient number, since it is larger than the sum of its proper divisors (35518099).

152809445 is an equidigital number, since it uses as much as digits as its factorization.

152809445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826039.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 152809445 is about 12361.6117476646. The cubic root of 152809445 is about 534.6259883394.

The spelling of 152809445 in words is "one hundred fifty-two million, eight hundred nine thousand, four hundred forty-five".