145087569 has 24 divisors (see below), whose sum is σ = 231390432. Its totient is φ = 86867520.

The previous prime is 145087541. The next prime is 145087583. The reversal of 145087569 is 965780541.

145087569 is a `hidden beast` number, since 1 + 4 + 5 + 0 + 87 + 569 = 666.

It is not a de Polignac number, because 145087569 - 2⁹ = 145087057 is a prime.

It is a super-2 number, since 2×145087569² = 42100805356659522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145087169) 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, 612 + ... + 17045.

It is an arithmetic number, because the mean of its divisors is an integer number (9641268).

Almost surely, 2^145087569 is an apocalyptic number.

It is an amenable number.

145087569 is a deficient number, since it is larger than the sum of its proper divisors (86302863).

145087569 is a wasteful number, since it uses less digits than its factorization.

145087569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17757 (or 17754 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 145087569 is about 12045.2301347878. The cubic root of 145087569 is about 525.4645249172.

The spelling of 145087569 in words is "one hundred forty-five million, eighty-seven thousand, five hundred sixty-nine".