151332481 has 4 divisors (see below), whose sum is σ = 151359700. Its totient is φ = 151305264.

The previous prime is 151332451. The next prime is 151332499. The reversal of 151332481 is 184233151.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184233151 = 23 ⋅8010137.

It can be written as a sum of positive squares in 2 ways, for example, as 31539456 + 119793025 = 5616^2 + 10945^2 .

It is a cyclic number.

It is not a de Polignac number, because 151332481 - 2¹¹ = 151330433 is a prime.

It is a super-2 number, since 2×151332481² = 45803039611230722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151332451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1926 + ... + 17503.

It is an arithmetic number, because the mean of its divisors is an integer number (37839925).

Almost surely, 2^151332481 is an apocalyptic number.

It is an amenable number.

151332481 is a deficient number, since it is larger than the sum of its proper divisors (27219).

151332481 is an equidigital number, since it uses as much as digits as its factorization.

151332481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27218.

The product of its digits is 2880, while the sum is 28.

The square root of 151332481 is about 12301.7267487130. The cubic root of 151332481 is about 532.8979514040.

The spelling of 151332481 in words is "one hundred fifty-one million, three hundred thirty-two thousand, four hundred eighty-one".