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153223045 = 530644609
BaseRepresentation
bin10010010000111…
…11111110000101
3101200022112111121
421020133332011
5303211114140
623112033541
73540242263
oct1110377605
9350275447
10153223045
1179543818
12433928b1
1325989c31
14164c7433
15d6b964a
hex921ff85

153223045 has 4 divisors (see below), whose sum is σ = 183867660. Its totient is φ = 122578432.

The previous prime is 153223039. The next prime is 153223067. The reversal of 153223045 is 540322351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540322351 = 1681132141.

It can be written as a sum of positive squares in 2 ways, for example, as 42068196 + 111154849 = 6486^2 + 10543^2 .

It is a cyclic number.

It is not a de Polignac number, because 153223045 - 25 = 153223013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15322300 + ... + 15322309.

It is an arithmetic number, because the mean of its divisors is an integer number (45966915).

Almost surely, 2153223045 is an apocalyptic number.

It is an amenable number.

153223045 is a deficient number, since it is larger than the sum of its proper divisors (30644615).

153223045 is an equidigital number, since it uses as much as digits as its factorization.

153223045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30644614.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 153223045 is about 12378.3296530671. The cubic root of 153223045 is about 535.1079003262.

Adding to 153223045 its reverse (540322351), we get a palindrome (693545396).

The spelling of 153223045 in words is "one hundred fifty-three million, two hundred twenty-three thousand, forty-five".

Divisors: 1 5 30644609 153223045