1055557 has 4 divisors (see below), whose sum is σ = 1070496. Its totient is φ = 1040620.

The previous prime is 1055543. The next prime is 1055567. The reversal of 1055557 is 7555501.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7555501 = 349 ⋅21649.

It is a cyclic number.

It is not a de Polignac number, because 1055557 - 2⁷ = 1055429 is a prime.

It is a super-2 number, since 2×1055557² = 2228401160498, which contains 22 as substring.

It is a Duffinian number.

1055557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055567) 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, 7363 + ... + 7504.

It is an arithmetic number, because the mean of its divisors is an integer number (267624).

2^1055557 is an apocalyptic number.

It is an amenable number.

1055557 is a deficient number, since it is larger than the sum of its proper divisors (14939).

1055557 is an equidigital number, since it uses as much as digits as its factorization.

1055557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14938.

The product of its (nonzero) digits is 4375, while the sum is 28.

The square root of 1055557 is about 1027.4030367874. The cubic root of 1055557 is about 101.8186255150.

The spelling of 1055557 in words is "one million, fifty-five thousand, five hundred fifty-seven".