51551654 has 16 divisors (see below), whose sum is σ = 96408576. Its totient is φ = 20085000.

The previous prime is 51551653. The next prime is 51551657. The reversal of 51551654 is 45615515.

51551654 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51551654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51551653) 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, 167222 + ... + 167529.

It is an arithmetic number, because the mean of its divisors is an integer number (6025536).

Almost surely, 2^51551654 is an apocalyptic number.

51551654 is a deficient number, since it is larger than the sum of its proper divisors (44856922).

51551654 is a wasteful number, since it uses less digits than its factorization.

51551654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334771.

The product of its digits is 15000, while the sum is 32.

The square root of 51551654 is about 7179.9480499513. The cubic root of 51551654 is about 372.1752893013.

The spelling of 51551654 in words is "fifty-one million, five hundred fifty-one thousand, six hundred fifty-four".