2215953 has 6 divisors (see below), whose sum is σ = 3200834. Its totient is φ = 1477296.

The previous prime is 2215949. The next prime is 2215963. The reversal of 2215953 is 3595122.

It can be written as a sum of positive squares in only one way, i.e., 1411344 + 804609 = 1188^2 + 897^2 .

It is not a de Polignac number, because 2215953 - 2² = 2215949 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2215903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123100 + ... + 123117.

2^2215953 is an apocalyptic number.

It is an amenable number.

2215953 is a deficient number, since it is larger than the sum of its proper divisors (984881).

2215953 is a wasteful number, since it uses less digits than its factorization.

2215953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246223 (or 246220 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 2215953 is about 1488.6077387949. The cubic root of 2215953 is about 130.3727565817.

The spelling of 2215953 in words is "two million, two hundred fifteen thousand, nine hundred fifty-three".