145286587 has 4 divisors (see below), whose sum is σ = 145373800. Its totient is φ = 145199376.

The previous prime is 145286579. The next prime is 145286599. The reversal of 145286587 is 785682541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145286587 - 2³ = 145286579 is a prime.

It is a super-2 number, since 2×145286587² = 42216384724217138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145286287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41058 + ... + 44455.

It is an arithmetic number, because the mean of its divisors is an integer number (36343450).

Almost surely, 2^145286587 is an apocalyptic number.

145286587 is a deficient number, since it is larger than the sum of its proper divisors (87213).

145286587 is an equidigital number, since it uses as much as digits as its factorization.

145286587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87212.

The product of its digits is 537600, while the sum is 46.

The square root of 145286587 is about 12053.4885821492. The cubic root of 145286587 is about 525.7046767087.

It can be divided in two parts, 14528 and 6587, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 145286587 in words is "one hundred forty-five million, two hundred eighty-six thousand, five hundred eighty-seven".