151691545 has 8 divisors (see below), whose sum is σ = 182259720. Its totient is φ = 121200000.

The previous prime is 151691543. The next prime is 151691557. The reversal of 151691545 is 545196151.

It can be written as a sum of positive squares in 4 ways, for example, as 31854736 + 119836809 = 5644^2 + 10947^2 .

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

It is not a de Polignac number, because 151691545 - 2¹ = 151691543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (151691543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14706 + ... + 22795.

It is an arithmetic number, because the mean of its divisors is an integer number (22782465).

Almost surely, 2^151691545 is an apocalyptic number.

It is an amenable number.

151691545 is a deficient number, since it is larger than the sum of its proper divisors (30568175).

151691545 is an equidigital number, since it uses as much as digits as its factorization.

151691545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38315.

The product of its digits is 27000, while the sum is 37.

The square root of 151691545 is about 12316.3121509647. The cubic root of 151691545 is about 533.3190844718.

The spelling of 151691545 in words is "one hundred fifty-one million, six hundred ninety-one thousand, five hundred forty-five".