145165587 has 24 divisors (see below), whose sum is σ = 225720000. Its totient is φ = 82743696.

The previous prime is 145165571. The next prime is 145165597. The reversal of 145165587 is 785561541.

It is not a de Polignac number, because 145165587 - 2⁴ = 145165571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145165597) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72364 + ... + 74342.

It is an arithmetic number, because the mean of its divisors is an integer number (9405000).

Almost surely, 2^145165587 is an apocalyptic number.

145165587 is a deficient number, since it is larger than the sum of its proper divisors (80554413).

145165587 is a wasteful number, since it uses less digits than its factorization.

145165587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495 (or 2488 counting only the distinct ones).

The product of its digits is 168000, while the sum is 42.

The square root of 145165587 is about 12048.4682428930. The cubic root of 145165587 is about 525.5586941273.

The spelling of 145165587 in words is "one hundred forty-five million, one hundred sixty-five thousand, five hundred eighty-seven".