51461553 has 32 divisors (see below), whose sum is σ = 81285120. Its totient is φ = 28549440.

The previous prime is 51461549. The next prime is 51461591. The reversal of 51461553 is 35516415.

51461553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51461553 - 2² = 51461549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51461553.

It is not an unprimeable number, because it can be changed into a prime (51461513) 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 31 ways as a sum of consecutive naturals, for example, 59200 + ... + 60062.

It is an arithmetic number, because the mean of its divisors is an integer number (2540160).

Almost surely, 2^51461553 is an apocalyptic number.

It is an amenable number.

51461553 is a deficient number, since it is larger than the sum of its proper divisors (29823567).

51461553 is a wasteful number, since it uses less digits than its factorization.

51461553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029.

The product of its digits is 9000, while the sum is 30.

The square root of 51461553 is about 7173.6708176498. The cubic root of 51461553 is about 371.9583358934.

Adding to 51461553 its reverse (35516415), we get a palindrome (86977968).

The spelling of 51461553 in words is "fifty-one million, four hundred sixty-one thousand, five hundred fifty-three".