51430448 has 20 divisors (see below), whose sum is σ = 99762960. Its totient is φ = 25685184.

The previous prime is 51430411. The next prime is 51430453. The reversal of 51430448 is 84403415.

It is a self number, because there is not a number n which added to its sum of digits gives 51430448.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19886 + ... + 22322.

It is an arithmetic number, because the mean of its divisors is an integer number (4988148).

Almost surely, 2^51430448 is an apocalyptic number.

It is an amenable number.

51430448 is a deficient number, since it is larger than the sum of its proper divisors (48332512).

51430448 is a wasteful number, since it uses less digits than its factorization.

51430448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3764 (or 3758 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 51430448 is about 7171.5024925046. The cubic root of 51430448 is about 371.8833796384.

The spelling of 51430448 in words is "fifty-one million, four hundred thirty thousand, four hundred forty-eight".