151201565 has 4 divisors (see below), whose sum is σ = 181441884. Its totient is φ = 120961248.

The previous prime is 151201543. The next prime is 151201579. The reversal of 151201565 is 565102151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 565102151 = 17 ⋅33241303.

It can be written as a sum of positive squares in 2 ways, for example, as 61293241 + 89908324 = 7829^2 + 9482^2 .

It is a cyclic number.

It is not a de Polignac number, because 151201565 - 2¹⁸ = 150939421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15120152 + ... + 15120161.

It is an arithmetic number, because the mean of its divisors is an integer number (45360471).

Almost surely, 2^151201565 is an apocalyptic number.

It is an amenable number.

151201565 is a deficient number, since it is larger than the sum of its proper divisors (30240319).

151201565 is an equidigital number, since it uses as much as digits as its factorization.

151201565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30240318.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 151201565 is about 12296.4045558041. The cubic root of 151201565 is about 532.7442390945.

The spelling of 151201565 in words is "one hundred fifty-one million, two hundred one thousand, five hundred sixty-five".