1140557 has 4 divisors (see below), whose sum is σ = 1244256. Its totient is φ = 1036860.

The previous prime is 1140539. The next prime is 1140563. The reversal of 1140557 is 7550411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1140557 - 2⁶ = 1140493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51833 + ... + 51854.

It is an arithmetic number, because the mean of its divisors is an integer number (311064).

2^1140557 is an apocalyptic number.

It is an amenable number.

1140557 is a deficient number, since it is larger than the sum of its proper divisors (103699).

1140557 is a wasteful number, since it uses less digits than its factorization.

1140557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103698.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 1140557 is about 1067.9686324982. The cubic root of 1140557 is about 104.4814035573.

Adding to 1140557 its reverse (7550411), we get a palindrome (8690968).

The spelling of 1140557 in words is "one million, one hundred forty thousand, five hundred fifty-seven".