1056857 has 8 divisors (see below), whose sum is σ = 1096200. Its totient is φ = 1018240.

The previous prime is 1056833. The next prime is 1056863. The reversal of 1056857 is 7586501.

It can be written as a sum of positive squares in 4 ways, for example, as 18496 + 1038361 = 136^2 + 1019^2 .

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 1056857 - 2⁶ = 1056793 is a prime.

It is a super-2 number, since 2×1056857² = 2233893436898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1059857) 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, 6023 + ... + 6195.

It is an arithmetic number, because the mean of its divisors is an integer number (137025).

2^1056857 is an apocalyptic number.

It is an amenable number.

1056857 is a deficient number, since it is larger than the sum of its proper divisors (39343).

1056857 is a wasteful number, since it uses less digits than its factorization.

1056857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 1056857 is about 1028.0355052234. The cubic root of 1056857 is about 101.8604075351.

The spelling of 1056857 in words is "one million, fifty-six thousand, eight hundred fifty-seven".