1057723 has 4 divisors (see below), whose sum is σ = 1119960. Its totient is φ = 995488.

The previous prime is 1057703. The next prime is 1057739. The reversal of 1057723 is 3277501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1057723 is a prime.

It is a super-2 number, since 2×1057723² = 2237555889458, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1057703) 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, 31093 + ... + 31126.

It is an arithmetic number, because the mean of its divisors is an integer number (279990).

2^1057723 is an apocalyptic number.

1057723 is a deficient number, since it is larger than the sum of its proper divisors (62237).

1057723 is an equidigital number, since it uses as much as digits as its factorization.

1057723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62236.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 1057723 is about 1028.4566106550. The cubic root of 1057723 is about 101.8882217775. Note that the first 3 decimals are identical.

The spelling of 1057723 in words is "one million, fifty-seven thousand, seven hundred twenty-three".