150821513 has 2 divisors, whose sum is σ = 150821514. Its totient is φ = 150821512.

The previous prime is 150821477. The next prime is 150821521. The reversal of 150821513 is 315128051.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113891584 + 36929929 = 10672^2 + 6077^2 .

It is a cyclic number.

It is not a de Polignac number, because 150821513 - 2¹⁴ = 150805129 is a prime.

It is not a weakly prime, because it can be changed into another prime (150821413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75410756 + 75410757.

It is an arithmetic number, because the mean of its divisors is an integer number (75410757).

Almost surely, 2^150821513 is an apocalyptic number.

It is an amenable number.

150821513 is a deficient number, since it is larger than the sum of its proper divisors (1).

150821513 is an equidigital number, since it uses as much as digits as its factorization.

150821513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 150821513 is about 12280.9410470045. The cubic root of 150821513 is about 532.2975056442.

Adding to 150821513 its reverse (315128051), we get a palindrome (465949564).

The spelling of 150821513 in words is "one hundred fifty million, eight hundred twenty-one thousand, five hundred thirteen".