34715221 has 2 divisors, whose sum is σ = 34715222. Its totient is φ = 34715220.

The previous prime is 34715209. The next prime is 34715231. The reversal of 34715221 is 12251743.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34644996 + 70225 = 5886^2 + 265^2 .

It is a cyclic number.

It is not a de Polignac number, because 34715221 - 2⁹ = 34714709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34715201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17357610 + 17357611.

It is an arithmetic number, because the mean of its divisors is an integer number (17357611).

Almost surely, 2^34715221 is an apocalyptic number.

It is an amenable number.

34715221 is a deficient number, since it is larger than the sum of its proper divisors (1).

34715221 is an equidigital number, since it uses as much as digits as its factorization.

34715221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 25.

The square root of 34715221 is about 5891.9624065332. The cubic root of 34715221 is about 326.2170415368.

Adding to 34715221 its reverse (12251743), we get a palindrome (46966964).

The spelling of 34715221 in words is "thirty-four million, seven hundred fifteen thousand, two hundred twenty-one".