34002561 has 4 divisors (see below), whose sum is σ = 45336752. Its totient is φ = 22668372.

The previous prime is 34002541. The next prime is 34002569. The reversal of 34002561 is 16520043.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16520043 = 3 ⋅5506681.

It is not a de Polignac number, because 34002561 - 2⁹ = 34002049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34002569) 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, 5667091 + ... + 5667096.

It is an arithmetic number, because the mean of its divisors is an integer number (11334188).

Almost surely, 2^34002561 is an apocalyptic number.

It is an amenable number.

34002561 is a deficient number, since it is larger than the sum of its proper divisors (11334191).

34002561 is a wasteful number, since it uses less digits than its factorization.

34002561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11334190.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 34002561 is about 5831.1714946484. The cubic root of 34002561 is about 323.9693138900.

The spelling of 34002561 in words is "thirty-four million, two thousand, five hundred sixty-one".