51045498 has 64 divisors (see below), whose sum is σ = 131281920. Its totient is φ = 14399856.

The previous prime is 51045497. The next prime is 51045503. The reversal of 51045498 is 89454015.

51045498 is a `hidden beast` number, since 5 + 104 + 549 + 8 = 666.

51045498 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51045497) 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, 30561 + ... + 32187.

It is an arithmetic number, because the mean of its divisors is an integer number (2051280).

Almost surely, 2^51045498 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51045498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65640960).

51045498 is an abundant number, since it is smaller than the sum of its proper divisors (80236422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51045498 is a wasteful number, since it uses less digits than its factorization.

51045498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728 (or 1722 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 51045498 is about 7144.6132155632. The cubic root of 51045498 is about 370.9532226704.

The spelling of 51045498 in words is "fifty-one million, forty-five thousand, four hundred ninety-eight".