51910551 has 120 divisors (see below), whose sum is σ = 104282640. Its totient is φ = 25401600.

The previous prime is 51910549. The next prime is 51910559. The reversal of 51910551 is 15501915.

51910551 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 51910551 - 2¹ = 51910549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51910559) 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 119 ways as a sum of consecutive naturals, for example, 1266091 + ... + 1266131.

It is an arithmetic number, because the mean of its divisors is an integer number (869022).

Almost surely, 2^51910551 is an apocalyptic number.

51910551 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

51910551 is a wasteful number, since it uses less digits than its factorization.

51910551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 1125, while the sum is 27.

The square root of 51910551 is about 7204.8977091975. The cubic root of 51910551 is about 373.0369740078.

The spelling of 51910551 in words is "fifty-one million, nine hundred ten thousand, five hundred fifty-one".