1056457 has 4 divisors (see below), whose sum is σ = 1112080. Its totient is φ = 1000836.

The previous prime is 1056443. The next prime is 1056463. The reversal of 1056457 is 7546501.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1056457 is a prime.

It is a super-2 number, since 2×1056457² = 2232202785698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1050457) 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, 27783 + ... + 27820.

It is an arithmetic number, because the mean of its divisors is an integer number (278020).

2^1056457 is an apocalyptic number.

It is an amenable number.

1056457 is a deficient number, since it is larger than the sum of its proper divisors (55623).

1056457 is an equidigital number, since it uses as much as digits as its factorization.

1056457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55622.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 1056457 is about 1027.8409410021. The cubic root of 1056457 is about 101.8475551800.

The spelling of 1056457 in words is "one million, fifty-six thousand, four hundred fifty-seven".