34156217 has 4 divisors (see below), whose sum is σ = 35079396. Its totient is φ = 33233040.

The previous prime is 34156211. The next prime is 34156237. The reversal of 34156217 is 71265143.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71265143 = 19 ⋅3750797.

It can be written as a sum of positive squares in 2 ways, for example, as 17272336 + 16883881 = 4156^2 + 4109^2 .

It is a cyclic number.

It is not a de Polignac number, because 34156217 - 2⁴ = 34156201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34156217.

It is not an unprimeable number, because it can be changed into a prime (34156211) 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, 461534 + ... + 461607.

It is an arithmetic number, because the mean of its divisors is an integer number (8769849).

Almost surely, 2^34156217 is an apocalyptic number.

34156217 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

34156217 is a deficient number, since it is larger than the sum of its proper divisors (923179).

34156217 is an equidigital number, since it uses as much as digits as its factorization.

34156217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923178.

The product of its digits is 5040, while the sum is 29.

The square root of 34156217 is about 5844.3320405329. The cubic root of 34156217 is about 324.4565814259.

The spelling of 34156217 in words is "thirty-four million, one hundred fifty-six thousand, two hundred seventeen".