51012546 has 96 divisors (see below), whose sum is σ = 122131968. Its totient is φ = 14100480.

The previous prime is 51012517. The next prime is 51012581. The reversal of 51012546 is 64521015.

51012546 is a modest number, since divided by 12546 gives 510 as remainder.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 698766 + ... + 698838.

It is an arithmetic number, because the mean of its divisors is an integer number (1272208).

Almost surely, 2^51012546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51012546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61065984).

51012546 is an abundant number, since it is smaller than the sum of its proper divisors (71119422).

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

51012546 is a wasteful number, since it uses less digits than its factorization.

51012546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 51012546 is about 7142.3067702249. The cubic root of 51012546 is about 370.8733835575.

The spelling of 51012546 in words is "fifty-one million, twelve thousand, five hundred forty-six".