1145597 has 4 divisors (see below), whose sum is σ = 1147740. Its totient is φ = 1143456.

The previous prime is 1145593. The next prime is 1145611. The reversal of 1145597 is 7955411.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7955411 = 103 ⋅77237.

It can be written as a sum of positive squares in 2 ways, for example, as 538756 + 606841 = 734^2 + 779^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145597 - 2² = 1145593 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145593) 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, 479 + ... + 1587.

It is an arithmetic number, because the mean of its divisors is an integer number (286935).

2^1145597 is an apocalyptic number.

It is an amenable number.

1145597 is a deficient number, since it is larger than the sum of its proper divisors (2143).

1145597 is a wasteful number, since it uses less digits than its factorization.

1145597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142.

The product of its digits is 6300, while the sum is 32.

The square root of 1145597 is about 1070.3256513791. The cubic root of 1145597 is about 104.6350748277.

The spelling of 1145597 in words is "one million, one hundred forty-five thousand, five hundred ninety-seven".