1157745 has 16 divisors (see below), whose sum is σ = 1877760. Its totient is φ = 609024.

The previous prime is 1157729. The next prime is 1157747. The reversal of 1157745 is 5477511.

It is not a de Polignac number, because 1157745 - 2⁴ = 1157729 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1157747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 697 + ... + 1673.

It is an arithmetic number, because the mean of its divisors is an integer number (117360).

2^1157745 is an apocalyptic number.

1157745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1157745 is a deficient number, since it is larger than the sum of its proper divisors (720015).

1157745 is an equidigital number, since it uses as much as digits as its factorization.

1157745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064.

The product of its digits is 4900, while the sum is 30.

The square root of 1157745 is about 1075.9855946991. The cubic root of 1157745 is about 105.0036279926.

The spelling of 1157745 in words is "one million, one hundred fifty-seven thousand, seven hundred forty-five".