34021257 has 4 divisors (see below), whose sum is σ = 45361680. Its totient is φ = 22680836.

The previous prime is 34021231. The next prime is 34021259. The reversal of 34021257 is 75212043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 34021257 - 2⁷ = 34021129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (34021259) 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, 5670207 + ... + 5670212.

It is an arithmetic number, because the mean of its divisors is an integer number (11340420).

Almost surely, 2^34021257 is an apocalyptic number.

It is an amenable number.

34021257 is a deficient number, since it is larger than the sum of its proper divisors (11340423).

34021257 is a wasteful number, since it uses less digits than its factorization.

34021257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11340422.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 34021257 is about 5832.7743827445. The cubic root of 34021257 is about 324.0286802077.

The spelling of 34021257 in words is "thirty-four million, twenty-one thousand, two hundred fifty-seven".