57221101 has 8 divisors (see below), whose sum is σ = 66317184. Its totient is φ = 48355440.

The previous prime is 57221081. The next prime is 57221183. The reversal of 57221101 is 10112275.

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

It is not a de Polignac number, because 57221101 - 2⁵ = 57221069 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 (57221191) 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, 57070 + ... + 58063.

It is an arithmetic number, because the mean of its divisors is an integer number (8289648).

Almost surely, 2^57221101 is an apocalyptic number.

It is an amenable number.

57221101 is a deficient number, since it is larger than the sum of its proper divisors (9096083).

57221101 is a wasteful number, since it uses less digits than its factorization.

57221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115211.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 57221101 is about 7564.4630344791. The cubic root of 57221101 is about 385.3470778061.

Adding to 57221101 its reverse (10112275), we get a palindrome (67333376).

The spelling of 57221101 in words is "fifty-seven million, two hundred twenty-one thousand, one hundred one".