557894401 has 4 divisors (see below), whose sum is σ = 559550212. Its totient is φ = 556238592.

The previous prime is 557894387. The next prime is 557894413. The reversal of 557894401 is 104498755.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104498755 = 5 ⋅20899751.

It can be written as a sum of positive squares in 2 ways, for example, as 294156801 + 263737600 = 17151^2 + 16240^2 .

It is a cyclic number.

It is not a de Polignac number, because 557894401 - 2⁵ = 557894369 is a prime.

It is a super-2 number, since 2×557894401² = 622492325334297602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557894101) 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, 827400 + ... + 828073.

It is an arithmetic number, because the mean of its divisors is an integer number (139887553).

Almost surely, 2^557894401 is an apocalyptic number.

It is an amenable number.

557894401 is a deficient number, since it is larger than the sum of its proper divisors (1655811).

557894401 is a wasteful number, since it uses less digits than its factorization.

557894401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655810.

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 557894401 is about 23619.7883352074. The cubic root of 557894401 is about 823.2226941140. Note that the first 3 decimals are identical.

The spelling of 557894401 in words is "five hundred fifty-seven million, eight hundred ninety-four thousand, four hundred one".