52478664 has 64 divisors (see below), whose sum is σ = 150681600. Its totient is φ = 14919744.

The previous prime is 52478653. The next prime is 52478687. The reversal of 52478664 is 46687425.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 39499 + ... + 40805.

It is an arithmetic number, because the mean of its divisors is an integer number (2354400).

Almost surely, 2^52478664 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 52478664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75340800).

52478664 is an abundant number, since it is smaller than the sum of its proper divisors (98202936).

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

52478664 is a wasteful number, since it uses less digits than its factorization.

52478664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562 (or 1558 counting only the distinct ones).

The product of its digits is 322560, while the sum is 42.

The square root of 52478664 is about 7244.2158995988. The cubic root of 52478664 is about 374.3928878589.

The spelling of 52478664 in words is "fifty-two million, four hundred seventy-eight thousand, six hundred sixty-four".