1145558 has 8 divisors (see below), whose sum is σ = 1777680. Its totient is φ = 553000.

The previous prime is 1145539. The next prime is 1145593. The reversal of 1145558 is 8555411.

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

It is a super-3 number, since 3×1145558³ = 4509958051677243336, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an Ulam number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1145558.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9818 + ... + 9933.

It is an arithmetic number, because the mean of its divisors is an integer number (222210).

2^1145558 is an apocalyptic number.

1145558 is a deficient number, since it is larger than the sum of its proper divisors (632122).

1145558 is a wasteful number, since it uses less digits than its factorization.

1145558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19782.

The product of its digits is 4000, while the sum is 29.

The square root of 1145558 is about 1070.3074324698. The cubic root of 1145558 is about 104.6338874369.

The spelling of 1145558 in words is "one million, one hundred forty-five thousand, five hundred fifty-eight".