34475821 has 2 divisors, whose sum is σ = 34475822. Its totient is φ = 34475820.

The previous prime is 34475803. The next prime is 34475843. The reversal of 34475821 is 12857443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27772900 + 6702921 = 5270^2 + 2589^2 .

It is an emirp because it is prime and its reverse (12857443) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34475821 - 2⁵ = 34475789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34475891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17237910 + 17237911.

It is an arithmetic number, because the mean of its divisors is an integer number (17237911).

Almost surely, 2^34475821 is an apocalyptic number.

It is an amenable number.

34475821 is a deficient number, since it is larger than the sum of its proper divisors (1).

34475821 is an equidigital number, since it uses as much as digits as its factorization.

34475821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 34.

The square root of 34475821 is about 5871.6114483164. The cubic root of 34475821 is about 325.4654349042.

The spelling of 34475821 in words is "thirty-four million, four hundred seventy-five thousand, eight hundred twenty-one".