150251021 has 4 divisors (see below), whose sum is σ = 150386652. Its totient is φ = 150115392.

The previous prime is 150251011. The next prime is 150251027. The reversal of 150251021 is 120152051.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48846121 + 101404900 = 6989^2 + 10070^2 .

It is a cyclic number.

It is not a de Polignac number, because 150251021 - 2¹⁰ = 150249997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150251027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66140 + ... + 68373.

It is an arithmetic number, because the mean of its divisors is an integer number (37596663).

Almost surely, 2^150251021 is an apocalyptic number.

It is an amenable number.

150251021 is a deficient number, since it is larger than the sum of its proper divisors (135631).

150251021 is a wasteful number, since it uses less digits than its factorization.

150251021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135630.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 150251021 is about 12257.6923195192. The cubic root of 150251021 is about 531.6255078751.

The spelling of 150251021 in words is "one hundred fifty million, two hundred fifty-one thousand, twenty-one".