151455561 has 8 divisors (see below), whose sum is σ = 204497280. Its totient is φ = 99692112.

The previous prime is 151455559. The next prime is 151455569. The reversal of 151455561 is 165554151.

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

It is not a de Polignac number, because 151455561 - 2¹ = 151455559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (151455569) 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, 319290 + ... + 319763.

It is an arithmetic number, because the mean of its divisors is an integer number (25562160).

Almost surely, 2^151455561 is an apocalyptic number.

It is an amenable number.

151455561 is a deficient number, since it is larger than the sum of its proper divisors (53041719).

151455561 is an equidigital number, since it uses as much as digits as its factorization.

151455561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639135.

The product of its digits is 15000, while the sum is 33.

The square root of 151455561 is about 12306.7282817165. The cubic root of 151455561 is about 533.0423824080.

It can be divided in two parts, 15145 and 5561, that added together give a triangular number (20706 = T₂₀₃).

The spelling of 151455561 in words is "one hundred fifty-one million, four hundred fifty-five thousand, five hundred sixty-one".