151015609 has 4 divisors (see below), whose sum is σ = 151681104. Its totient is φ = 150350116.

The previous prime is 151015597. The next prime is 151015639. The reversal of 151015609 is 906510151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 906510151 = 5821 ⋅155731.

It is a cyclic number.

It is not a de Polignac number, because 151015609 - 2⁷ = 151015481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151015639) 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, 332407 + ... + 332860.

It is an arithmetic number, because the mean of its divisors is an integer number (37920276).

Almost surely, 2^151015609 is an apocalyptic number.

It is an amenable number.

151015609 is a deficient number, since it is larger than the sum of its proper divisors (665495).

151015609 is an equidigital number, since it uses as much as digits as its factorization.

151015609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665494.

The product of its (nonzero) digits is 1350, while the sum is 28.

The square root of 151015609 is about 12288.8408322347. The cubic root of 151015609 is about 532.5257501122.

The spelling of 151015609 in words is "one hundred fifty-one million, fifteen thousand, six hundred nine".