51279048 has 64 divisors (see below), whose sum is σ = 145780800. Its totient is φ = 16692480.

The previous prime is 51279023. The next prime is 51279113. The reversal of 51279048 is 84097215.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6528 + ... + 12048.

It is an arithmetic number, because the mean of its divisors is an integer number (2277825).

Almost surely, 2^51279048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51279048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72890400).

51279048 is an abundant number, since it is smaller than the sum of its proper divisors (94501752).

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

51279048 is a wasteful number, since it uses less digits than its factorization.

51279048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5579 (or 5569 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 51279048 is about 7160.9390445667. The cubic root of 51279048 is about 371.5181065077.

The spelling of 51279048 in words is "fifty-one million, two hundred seventy-nine thousand, forty-eight".