145857565 has 24 divisors (see below), whose sum is σ = 205117920. Its totient is φ = 99273888.

The previous prime is 145857563. The next prime is 145857581. The reversal of 145857565 is 565758541.

It is not a de Polignac number, because 145857565 - 2¹ = 145857563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145857563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31914 + ... + 36196.

It is an arithmetic number, because the mean of its divisors is an integer number (8546580).

Almost surely, 2^145857565 is an apocalyptic number.

It is an amenable number.

145857565 is a deficient number, since it is larger than the sum of its proper divisors (59260355).

145857565 is a wasteful number, since it uses less digits than its factorization.

145857565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4441 (or 4434 counting only the distinct ones).

The product of its digits is 840000, while the sum is 46.

The square root of 145857565 is about 12077.1505331349. The cubic root of 145857565 is about 526.3924516988.

The spelling of 145857565 in words is "one hundred forty-five million, eight hundred fifty-seven thousand, five hundred sixty-five".