150438521 has 2 divisors, whose sum is σ = 150438522. Its totient is φ = 150438520.

The previous prime is 150438511. The next prime is 150438529. The reversal of 150438521 is 125834051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139122025 + 11316496 = 11795^2 + 3364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-150438521 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (150438529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75219260 + 75219261.

It is an arithmetic number, because the mean of its divisors is an integer number (75219261).

Almost surely, 2^150438521 is an apocalyptic number.

It is an amenable number.

150438521 is a deficient number, since it is larger than the sum of its proper divisors (1).

150438521 is an equidigital number, since it uses as much as digits as its factorization.

150438521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 150438521 is about 12265.3381934621. The cubic root of 150438521 is about 531.8465565063.

The spelling of 150438521 in words is "one hundred fifty million, four hundred thirty-eight thousand, five hundred twenty-one".