51616553 has 8 divisors (see below), whose sum is σ = 52585920. Its totient is φ = 50651280.

The previous prime is 51616547. The next prime is 51616567. The reversal of 51616553 is 35561615.

51616553 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 51616553 - 2¹⁴ = 51600169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51616583) 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, 37076 + ... + 38442.

It is an arithmetic number, because the mean of its divisors is an integer number (6573240).

Almost surely, 2^51616553 is an apocalyptic number.

It is an amenable number.

51616553 is a deficient number, since it is larger than the sum of its proper divisors (969367).

51616553 is a wasteful number, since it uses less digits than its factorization.

51616553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2047.

The product of its digits is 13500, while the sum is 32.

The square root of 51616553 is about 7184.4660901141. The cubic root of 51616553 is about 372.3314024647.

The spelling of 51616553 in words is "fifty-one million, six hundred sixteen thousand, five hundred fifty-three".