51789654 has 48 divisors (see below), whose sum is σ = 132387840. Its totient is φ = 14318640.

The previous prime is 51789653. The next prime is 51789659. The reversal of 51789654 is 45698715.

51789654 is a `hidden beast` number, since 517 + 89 + 6 + 54 = 666.

It is a super-3 number, since 3×51789654³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51789653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2724 + ... + 10535.

It is an arithmetic number, because the mean of its divisors is an integer number (2758080).

Almost surely, 2^51789654 is an apocalyptic number.

51789654 is an abundant number, since it is smaller than the sum of its proper divisors (80598186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51789654 is a wasteful number, since it uses less digits than its factorization.

51789654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13305 (or 13302 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 51789654 is about 7196.5029007150. The cubic root of 51789654 is about 372.7471542655.

The spelling of 51789654 in words is "fifty-one million, seven hundred eighty-nine thousand, six hundred fifty-four".