2921217 has 8 divisors (see below), whose sum is σ = 4194624. Its totient is φ = 1797648.

The previous prime is 2921213. The next prime is 2921221. The reversal of 2921217 is 7121292.

It is an interprime number because it is at equal distance from previous prime (2921213) and next prime (2921221).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2921217 - 2² = 2921213 is a prime.

It is a super-2 number, since 2×2921217² = 17067017522178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2921213) 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, 37413 + ... + 37490.

It is an arithmetic number, because the mean of its divisors is an integer number (524328).

2^2921217 is an apocalyptic number.

It is an amenable number.

2921217 is a deficient number, since it is larger than the sum of its proper divisors (1273407).

2921217 is a wasteful number, since it uses less digits than its factorization.

2921217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74919.

The product of its digits is 504, while the sum is 24.

The square root of 2921217 is about 1709.1568096579. The cubic root of 2921217 is about 142.9512442390.

The spelling of 2921217 in words is "two million, nine hundred twenty-one thousand, two hundred seventeen".