57221103 has 8 divisors (see below), whose sum is σ = 80310400. Its totient is φ = 36139608.

The previous prime is 57221081. The next prime is 57221183. The reversal of 57221103 is 30112275.

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

It is not a de Polignac number, because 57221103 - 2¹² = 57217007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57221103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57221183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501883 + ... + 501996.

It is an arithmetic number, because the mean of its divisors is an integer number (10038800).

Almost surely, 2^57221103 is an apocalyptic number.

57221103 is a deficient number, since it is larger than the sum of its proper divisors (23089297).

57221103 is a wasteful number, since it uses less digits than its factorization.

57221103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003901.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 57221103 is about 7564.4631666761. The cubic root of 57221103 is about 385.3470822957.

Adding to 57221103 its reverse (30112275), we get a palindrome (87333378).

The spelling of 57221103 in words is "fifty-seven million, two hundred twenty-one thousand, one hundred three".