51199456 has 72 divisors (see below), whose sum is σ = 126690480. Its totient is φ = 19937280.

The previous prime is 51199451. The next prime is 51199469. The reversal of 51199456 is 65499115.

51199456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51199451) 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 11 ways as a sum of consecutive naturals, for example, 26160 + ... + 28048.

It is an arithmetic number, because the mean of its divisors is an integer number (1759590).

Almost surely, 2^51199456 is an apocalyptic number.

51199456 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51199456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63345240).

51199456 is an abundant number, since it is smaller than the sum of its proper divisors (75491024).

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

51199456 is a wasteful number, since it uses less digits than its factorization.

51199456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928 (or 1909 counting only the distinct ones).

The product of its digits is 48600, while the sum is 40.

The square root of 51199456 is about 7155.3795147427. The cubic root of 51199456 is about 371.3257915675.

The spelling of 51199456 in words is "fifty-one million, one hundred ninety-nine thousand, four hundred fifty-six".