51564067 has 8 divisors (see below), whose sum is σ = 53473280. Its totient is φ = 49670280.

The previous prime is 51564041. The next prime is 51564083. The reversal of 51564067 is 76046515.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51564067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51564167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3184 + ... + 10642.

It is an arithmetic number, because the mean of its divisors is an integer number (6684160).

Almost surely, 2^51564067 is an apocalyptic number.

51564067 is a deficient number, since it is larger than the sum of its proper divisors (1909213).

51564067 is a wasteful number, since it uses less digits than its factorization.

51564067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7713.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 51564067 is about 7180.8124192183. The cubic root of 51564067 is about 372.2051586379.

The spelling of 51564067 in words is "fifty-one million, five hundred sixty-four thousand, sixty-seven".