4056557 has 12 divisors (see below), whose sum is σ = 4539996. Its totient is φ = 3611520.

The previous prime is 4056553. The next prime is 4056583. The reversal of 4056557 is 7556504.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3189796 + 866761 = 1786^2 + 931^2 .

It is not a de Polignac number, because 4056557 - 2² = 4056553 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4056553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5807 + ... + 6467.

It is an arithmetic number, because the mean of its divisors is an integer number (378333).

Almost surely, 2^4056557 is an apocalyptic number.

It is an amenable number.

4056557 is a deficient number, since it is larger than the sum of its proper divisors (483439).

4056557 is a wasteful number, since it uses less digits than its factorization.

4056557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 697 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 4056557 is about 2014.0896206475. The cubic root of 4056557 is about 159.4847618622.

The spelling of 4056557 in words is "four million, fifty-six thousand, five hundred fifty-seven".