1564145 has 8 divisors (see below), whose sum is σ = 2047680. Its totient is φ = 1137520.

The previous prime is 1564139. The next prime is 1564151. The reversal of 1564145 is 5414651.

It is an interprime number because it is at equal distance from previous prime (1564139) and next prime (1564151).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1564145 - 2⁶ = 1564081 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14165 + ... + 14274.

It is an arithmetic number, because the mean of its divisors is an integer number (255960).

2^1564145 is an apocalyptic number.

It is an amenable number.

1564145 is a deficient number, since it is larger than the sum of its proper divisors (483535).

1564145 is a wasteful number, since it uses less digits than its factorization.

1564145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28455.

The product of its digits is 2400, while the sum is 26.

The square root of 1564145 is about 1250.6578269055. The cubic root of 1564145 is about 116.0804287639.

Adding to 1564145 its reverse (5414651), we get a palindrome (6978796).

The spelling of 1564145 in words is "one million, five hundred sixty-four thousand, one hundred forty-five".