51522789 has 8 divisors (see below), whose sum is σ = 69046560. Its totient is φ = 34173776.

The previous prime is 51522787. The next prime is 51522797. The reversal of 51522789 is 98722515.

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 51522789 - 2¹ = 51522787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51522781) 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, 42999 + ... + 44180.

It is an arithmetic number, because the mean of its divisors is an integer number (8630820).

Almost surely, 2^51522789 is an apocalyptic number.

It is an amenable number.

51522789 is a deficient number, since it is larger than the sum of its proper divisors (17523771).

51522789 is a wasteful number, since it uses less digits than its factorization.

51522789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87379.

The product of its digits is 50400, while the sum is 39.

The square root of 51522789 is about 7177.9376564582. The cubic root of 51522789 is about 372.1058130603.

The spelling of 51522789 in words is "fifty-one million, five hundred twenty-two thousand, seven hundred eighty-nine".