151531565 has 16 divisors (see below), whose sum is σ = 188822016. Its totient is φ = 116616000.

The previous prime is 151531519. The next prime is 151531577. The reversal of 151531565 is 565135151.

It is not a de Polignac number, because 151531565 - 2²² = 147337261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23990 + ... + 29640.

It is an arithmetic number, because the mean of its divisors is an integer number (11801376).

Almost surely, 2^151531565 is an apocalyptic number.

It is an amenable number.

151531565 is a deficient number, since it is larger than the sum of its proper divisors (37290451).

151531565 is a wasteful number, since it uses less digits than its factorization.

151531565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5860.

The product of its digits is 11250, while the sum is 32.

The square root of 151531565 is about 12309.8157987843. The cubic root of 151531565 is about 533.1315319424.

The spelling of 151531565 in words is "one hundred fifty-one million, five hundred thirty-one thousand, five hundred sixty-five".