151326561 has 8 divisors (see below), whose sum is σ = 201896320. Its totient is φ = 100820592.

The previous prime is 151326533. The next prime is 151326587. The reversal of 151326561 is 165623151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 151326561 - 2²³ = 142937953 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (151326661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10105 + ... + 20118.

It is an arithmetic number, because the mean of its divisors is an integer number (25237040).

Almost surely, 2^151326561 is an apocalyptic number.

It is an amenable number.

151326561 is a deficient number, since it is larger than the sum of its proper divisors (50569759).

151326561 is a wasteful number, since it uses less digits than its factorization.

151326561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31895.

The product of its digits is 5400, while the sum is 30.

The square root of 151326561 is about 12301.4861297325. The cubic root of 151326561 is about 532.8910024727.

The spelling of 151326561 in words is "one hundred fifty-one million, three hundred twenty-six thousand, five hundred sixty-one".