51267648 has 112 divisors (see below), whose sum is σ = 145938240. Its totient is φ = 15826944.

The previous prime is 51267611. The next prime is 51267661. The reversal of 51267648 is 84676215.

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, 368763 + ... + 368901.

It is an arithmetic number, because the mean of its divisors is an integer number (1303020).

Almost surely, 2^51267648 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 51267648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72969120).

51267648 is an abundant number, since it is smaller than the sum of its proper divisors (94670592).

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

51267648 is a wasteful number, since it uses less digits than its factorization.

51267648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 274 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 51267648 is about 7160.1430153315. The cubic root of 51267648 is about 371.4905733633.

It can be divided in two parts, 51267 and 648, that added together give a palindrome (51915).

The spelling of 51267648 in words is "fifty-one million, two hundred sixty-seven thousand, six hundred forty-eight".