51554663 has 8 divisors (see below), whose sum is σ = 53414400. Its totient is φ = 49700448.

The previous prime is 51554641. The next prime is 51554719. The reversal of 51554663 is 36645515.

51554663 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 a cyclic number.

It is not a de Polignac number, because 51554663 - 2⁶ = 51554599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51554623) 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, 30170 + ... + 31832.

It is an arithmetic number, because the mean of its divisors is an integer number (6676800).

Almost surely, 2^51554663 is an apocalyptic number.

51554663 is a deficient number, since it is larger than the sum of its proper divisors (1859737).

51554663 is a wasteful number, since it uses less digits than its factorization.

51554663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761.

The product of its digits is 54000, while the sum is 35.

The square root of 51554663 is about 7180.1575887998. The cubic root of 51554663 is about 372.1825302824.

The spelling of 51554663 in words is "fifty-one million, five hundred fifty-four thousand, six hundred sixty-three".