2215457 has 10 divisors (see below), whose sum is σ = 2476098. Its totient is φ = 1975392.

The previous prime is 2215417. The next prime is 2215463. The reversal of 2215457 is 7545122.

It can be written as a sum of positive squares in only one way, i.e., 2085136 + 130321 = 1444^2 + 361^2 .

It is not a de Polignac number, because 2215457 - 2⁶ = 2215393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2215417) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 116594 + ... + 116612.

2^2215457 is an apocalyptic number.

It is an amenable number.

2215457 is a deficient number, since it is larger than the sum of its proper divisors (260641).

2215457 is an frugal number, since it uses more digits than its factorization.

2215457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 36 counting only the distinct ones).

The product of its digits is 2800, while the sum is 26.

The square root of 2215457 is about 1488.4411308480. The cubic root of 2215457 is about 130.3630286810.

The spelling of 2215457 in words is "two million, two hundred fifteen thousand, four hundred fifty-seven".