51069844 has 24 divisors (see below), whose sum is σ = 106581888. Its totient is φ = 20935200.

The previous prime is 51069827. The next prime is 51069847. The reversal of 51069844 is 44896015.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51069847) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 39007 + ... + 40294.

It is an arithmetic number, because the mean of its divisors is an integer number (4440912).

Almost surely, 2^51069844 is an apocalyptic number.

It is an amenable number.

51069844 is an abundant number, since it is smaller than the sum of its proper divisors (55512044).

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

51069844 is a wasteful number, since it uses less digits than its factorization.

51069844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79335 (or 79333 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 51069844 is about 7146.3168135761. The cubic root of 51069844 is about 371.0121883127.

The spelling of 51069844 in words is "fifty-one million, sixty-nine thousand, eight hundred forty-four".