51652569 has 8 divisors (see below), whose sum is σ = 68908480. Its totient is φ = 34415856.

The previous prime is 51652547. The next prime is 51652607. The reversal of 51652569 is 96525615.

51652569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 51652569 - 2⁸ = 51652313 is a prime.

It is a super-2 number, since 2×51652569² = 5335975768599522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51654569) 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 7 ways as a sum of consecutive naturals, for example, 3564 + ... + 10770.

It is an arithmetic number, because the mean of its divisors is an integer number (8613560).

Almost surely, 2^51652569 is an apocalyptic number.

It is an amenable number.

51652569 is a deficient number, since it is larger than the sum of its proper divisors (17255911).

51652569 is a wasteful number, since it uses less digits than its factorization.

51652569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9599.

The product of its digits is 81000, while the sum is 39.

The square root of 51652569 is about 7186.9721719233. The cubic root of 51652569 is about 372.4179817321.

The spelling of 51652569 in words is "fifty-one million, six hundred fifty-two thousand, five hundred sixty-nine".