2915217 has 8 divisors (see below), whose sum is σ = 4318880. Its totient is φ = 1943460.

The previous prime is 2915201. The next prime is 2915219. The reversal of 2915217 is 7125192.

It is not a de Polignac number, because 2915217 - 2⁴ = 2915201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 107971 = 2915217 / (2 + 9 + 1 + 5 + 2 + 1 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2915219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53959 + ... + 54012.

It is an arithmetic number, because the mean of its divisors is an integer number (539860).

2^2915217 is an apocalyptic number.

2915217 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2915217 is a deficient number, since it is larger than the sum of its proper divisors (1403663).

2915217 is a wasteful number, since it uses less digits than its factorization.

2915217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107980 (or 107974 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 2915217 is about 1707.4006559680. The cubic root of 2915217 is about 142.8533061351.

The spelling of 2915217 in words is "two million, nine hundred fifteen thousand, two hundred seventeen".