34557021 has 12 divisors (see below), whose sum is σ = 50029980. Its totient is φ = 22985280.

The previous prime is 34557013. The next prime is 34557023. The reversal of 34557021 is 12075543.

It is a happy number.

34557021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7371225 + 27185796 = 2715^2 + 5214^2 .

It is not a de Polignac number, because 34557021 - 2³ = 34557013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34557023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16 + ... + 8313.

It is an arithmetic number, because the mean of its divisors is an integer number (4169165).

Almost surely, 2^34557021 is an apocalyptic number.

It is an amenable number.

34557021 is a deficient number, since it is larger than the sum of its proper divisors (15472959).

34557021 is a wasteful number, since it uses less digits than its factorization.

34557021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8796 (or 8793 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 34557021 is about 5878.5220081242. The cubic root of 34557021 is about 325.7207546367.

The spelling of 34557021 in words is "thirty-four million, five hundred fifty-seven thousand, twenty-one".