150121551 has 16 divisors (see below), whose sum is σ = 203338080. Its totient is φ = 98503680.

The previous prime is 150121537. The next prime is 150121571. The reversal of 150121551 is 155121051.

It is not a de Polignac number, because 150121551 - 2¹⁰ = 150120527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150121501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63181 + ... + 65513.

It is an arithmetic number, because the mean of its divisors is an integer number (12708630).

Almost surely, 2^150121551 is an apocalyptic number.

150121551 is a deficient number, since it is larger than the sum of its proper divisors (53216529).

150121551 is a wasteful number, since it uses less digits than its factorization.

150121551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666.

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 150121551 is about 12252.4100078311. The cubic root of 150121551 is about 531.4727649665.

The spelling of 150121551 in words is "one hundred fifty million, one hundred twenty-one thousand, five hundred fifty-one".