1145557 has 8 divisors (see below), whose sum is σ = 1344896. Its totient is φ = 955152.

The previous prime is 1145539. The next prime is 1145593. The reversal of 1145557 is 7555411.

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

It is a cyclic number.

It is not a de Polignac number, because 1145557 - 2⁷ = 1145429 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1953 + ... + 2470.

It is an arithmetic number, because the mean of its divisors is an integer number (168112).

2^1145557 is an apocalyptic number.

It is an amenable number.

1145557 is a deficient number, since it is larger than the sum of its proper divisors (199339).

1145557 is an equidigital number, since it uses as much as digits as its factorization.

1145557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4467.

The product of its digits is 3500, while the sum is 28.

The square root of 1145557 is about 1070.3069653142. The cubic root of 1145557 is about 104.6338569906.

It can be divided in two parts, 114 and 5557, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 1145557 in words is "one million, one hundred forty-five thousand, five hundred fifty-seven".