2211057 has 18 divisors (see below), whose sum is σ = 3326258. Its totient is φ = 1469664.

The previous prime is 2211029. The next prime is 2211061. The reversal of 2211057 is 7501122.

It can be written as a sum of positive squares in only one way, i.e., 1679616 + 531441 = 1296^2 + 729^2 .

It is not a de Polignac number, because 2211057 - 2⁶ = 2210993 is a prime.

It is a Duffinian number.

2211057 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2211257) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6393 + ... + 6729.

2^2211057 is an apocalyptic number.

2211057 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2211057 is a deficient number, since it is larger than the sum of its proper divisors (1115201).

2211057 is an frugal number, since it uses more digits than its factorization.

2211057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 2211057 is about 1486.9623398056. The cubic root of 2211057 is about 130.2766691509.

Adding to 2211057 its reverse (7501122), we get a palindrome (9712179).

The spelling of 2211057 in words is "two million, two hundred eleven thousand, fifty-seven".