2215057 has 4 divisors (see below), whose sum is σ = 2385460. Its totient is φ = 2044656.

The previous prime is 2215051. The next prime is 2215067. The reversal of 2215057 is 7505122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7505122 = 2 ⋅3752561.

It can be written as a sum of positive squares in 2 ways, for example, as 553536 + 1661521 = 744^2 + 1289^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215057 - 2⁷ = 2214929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2215051) 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, 85182 + ... + 85207.

It is an arithmetic number, because the mean of its divisors is an integer number (596365).

2^2215057 is an apocalyptic number.

It is an amenable number.

2215057 is a deficient number, since it is larger than the sum of its proper divisors (170403).

2215057 is a wasteful number, since it uses less digits than its factorization.

2215057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170402.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 2215057 is about 1488.3067560150. The cubic root of 2215057 is about 130.3551825421.

The spelling of 2215057 in words is "two million, two hundred fifteen thousand, fifty-seven".