7210057 has 4 divisors (see below), whose sum is σ = 7634196. Its totient is φ = 6785920.

The previous prime is 7210043. The next prime is 7210061. The reversal of 7210057 is 7500127.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1915456 + 5294601 = 1384^2 + 2301^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7210057 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7210037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212044 + ... + 212077.

It is an arithmetic number, because the mean of its divisors is an integer number (1908549).

Almost surely, 2^7210057 is an apocalyptic number.

It is an amenable number.

7210057 is a deficient number, since it is larger than the sum of its proper divisors (424139).

7210057 is a wasteful number, since it uses less digits than its factorization.

7210057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424138.

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 7210057 is about 2685.1549303532. The cubic root of 7210057 is about 193.1877418219.

The spelling of 7210057 in words is "seven million, two hundred ten thousand, fifty-seven".