150020505 has 20 divisors (see below), whose sum is σ = 268926372. Its totient is φ = 80010720.

The previous prime is 150020503. The next prime is 150020531. The reversal of 150020505 is 505020051.

It can be written as a sum of positive squares in 2 ways, for example, as 31036041 + 118984464 = 5571^2 + 10908^2 .

It is not a de Polignac number, because 150020505 - 2¹ = 150020503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150020503) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 184806 + ... + 185615.

Almost surely, 2^150020505 is an apocalyptic number.

150020505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

150020505 is a deficient number, since it is larger than the sum of its proper divisors (118905867).

150020505 is an equidigital number, since it uses as much as digits as its factorization.

150020505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370438 (or 370429 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 150020505 is about 12248.2857984291. The cubic root of 150020505 is about 531.3534943926.

Adding to 150020505 its reverse (505020051), we get a palindrome (655040556).

The spelling of 150020505 in words is "one hundred fifty million, twenty thousand, five hundred five".