51572005 has 8 divisors (see below), whose sum is σ = 64020600. Its totient is φ = 39834816.

The previous prime is 51571963. The next prime is 51572041. The reversal of 51572005 is 50027515.

It is a happy number.

51572005 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 4 ways, for example, as 15499969 + 36072036 = 3937^2 + 6006^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51572005 - 2⁹ = 51571493 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 177690 + ... + 177979.

It is an arithmetic number, because the mean of its divisors is an integer number (8002575).

Almost surely, 2^51572005 is an apocalyptic number.

It is an amenable number.

51572005 is a deficient number, since it is larger than the sum of its proper divisors (12448595).

51572005 is a wasteful number, since it uses less digits than its factorization.

51572005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355703.

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 51572005 is about 7181.3651209223. The cubic root of 51572005 is about 372.2242572927.

The spelling of 51572005 in words is "fifty-one million, five hundred seventy-two thousand, five".