151015561 has 8 divisors (see below), whose sum is σ = 151905600. Its totient is φ = 150128880.

The previous prime is 151015549. The next prime is 151015583. The reversal of 151015561 is 165510151.

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

It is a cyclic number.

It is not a de Polignac number, because 151015561 - 2¹⁹ = 150491273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151015541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183531 + ... + 184351.

It is an arithmetic number, because the mean of its divisors is an integer number (18988200).

Almost surely, 2^151015561 is an apocalyptic number.

It is an amenable number.

151015561 is a deficient number, since it is larger than the sum of its proper divisors (890039).

151015561 is an equidigital number, since it uses as much as digits as its factorization.

151015561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679.

The product of its (nonzero) digits is 750, while the sum is 25.

The square root of 151015561 is about 12288.8388792432. The cubic root of 151015561 is about 532.5256936914.

It can be divided in two parts, 1510 and 15561, that added together give a palindrome (17071).

The spelling of 151015561 in words is "one hundred fifty-one million, fifteen thousand, five hundred sixty-one".