51039774 has 32 divisors (see below), whose sum is σ = 113664000. Its totient is φ = 16976952.

The previous prime is 51039773. The next prime is 51039787. The reversal of 51039774 is 47793015.

It is a happy number.

51039774 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 (51039773) 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 15 ways as a sum of consecutive naturals, for example, 39267 + ... + 40545.

It is an arithmetic number, because the mean of its divisors is an integer number (3552000).

Almost surely, 2^51039774 is an apocalyptic number.

51039774 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

51039774 is an abundant number, since it is smaller than the sum of its proper divisors (62624226).

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

51039774 is a wasteful number, since it uses less digits than its factorization.

51039774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2029 (or 2023 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 51039774 is about 7144.2126228158. The cubic root of 51039774 is about 370.9393565072.

The spelling of 51039774 in words is "fifty-one million, thirty-nine thousand, seven hundred seventy-four".