145587845 has 16 divisors (see below), whose sum is σ = 189529200. Its totient is φ = 106719744.

The previous prime is 145587839. The next prime is 145587857. The reversal of 145587845 is 548785541.

It can be written as a sum of positive squares in 8 ways, for example, as 23020804 + 122567041 = 4798^2 + 11071^2 .

It is a cyclic number.

It is not a de Polignac number, because 145587845 - 2¹⁸ = 145325701 is a prime.

It is a super-2 number, since 2×145587845² = 42391641223488050, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145587845.

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, 731 + ... + 17079.

It is an arithmetic number, because the mean of its divisors is an integer number (11845575).

Almost surely, 2^145587845 is an apocalyptic number.

It is an amenable number.

145587845 is a deficient number, since it is larger than the sum of its proper divisors (43941355).

145587845 is a wasteful number, since it uses less digits than its factorization.

145587845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16504.

The product of its digits is 896000, while the sum is 47.

The square root of 145587845 is about 12065.9788247784. The cubic root of 145587845 is about 526.0677829537.

The spelling of 145587845 in words is "one hundred forty-five million, five hundred eighty-seven thousand, eight hundred forty-five".