51428654 has 4 divisors (see below), whose sum is σ = 77142984. Its totient is φ = 25714326.

The previous prime is 51428633. The next prime is 51428681. The reversal of 51428654 is 45682415.

51428654 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 12857162 + ... + 12857165.

It is an arithmetic number, because the mean of its divisors is an integer number (19285746).

Almost surely, 2^51428654 is an apocalyptic number.

51428654 is a deficient number, since it is larger than the sum of its proper divisors (25714330).

51428654 is a wasteful number, since it uses less digits than its factorization.

51428654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25714329.

The product of its digits is 38400, while the sum is 35.

The square root of 51428654 is about 7171.3774130219. The cubic root of 51428654 is about 371.8790555686.

The spelling of 51428654 in words is "fifty-one million, four hundred twenty-eight thousand, six hundred fifty-four".