57404869 has 8 divisors (see below), whose sum is σ = 61012440. Its totient is φ = 53822976.

The previous prime is 57404827. The next prime is 57404873. The reversal of 57404869 is 96840475.

It can be written as a sum of positive squares in 4 ways, for example, as 20657025 + 36747844 = 4545^2 + 6062^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57404869 is a prime.

It is a super-2 number, since 2×57404869² = 6590637969814322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57404819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1704 + ... + 10849.

It is an arithmetic number, because the mean of its divisors is an integer number (7626555).

Almost surely, 2^57404869 is an apocalyptic number.

It is an amenable number.

57404869 is a deficient number, since it is larger than the sum of its proper divisors (3607571).

57404869 is a wasteful number, since it uses less digits than its factorization.

57404869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12839.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 57404869 is about 7576.6000950294. The cubic root of 57404869 is about 385.7591564952.

It can be divided in two parts, 5740 and 4869, that added together give a square (10609 = 103²).

The spelling of 57404869 in words is "fifty-seven million, four hundred four thousand, eight hundred sixty-nine".