51443406 has 48 divisors (see below), whose sum is σ = 127786464. Its totient is φ = 14651712.

The previous prime is 51443369. The next prime is 51443417. The reversal of 51443406 is 60434415.

It is a self number, because there is not a number n which added to its sum of digits gives 51443406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69816 + ... + 70548.

It is an arithmetic number, because the mean of its divisors is an integer number (2662218).

Almost surely, 2^51443406 is an apocalyptic number.

51443406 is an abundant number, since it is smaller than the sum of its proper divisors (76343058).

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

51443406 is a wasteful number, since it uses less digits than its factorization.

51443406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305 (or 1302 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 51443406 is about 7172.4058725089. The cubic root of 51443406 is about 371.9146092593.

The spelling of 51443406 in words is "fifty-one million, four hundred forty-three thousand, four hundred six".