57217402 has 16 divisors (see below), whose sum is σ = 93750624. Its totient is φ = 25974000.

The previous prime is 57217387. The next prime is 57217411. The reversal of 57217402 is 20471275.

57217402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24652 + ... + 26872.

It is an arithmetic number, because the mean of its divisors is an integer number (5859414).

Almost surely, 2^57217402 is an apocalyptic number.

57217402 is a deficient number, since it is larger than the sum of its proper divisors (36533222).

57217402 is a wasteful number, since it uses less digits than its factorization.

57217402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3405.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 57217402 is about 7564.2185320098. The cubic root of 57217402 is about 385.3387741702.

Adding to 57217402 its reverse (20471275), we get a palindrome (77688677).

The spelling of 57217402 in words is "fifty-seven million, two hundred seventeen thousand, four hundred two".