52773440 has 112 divisors (see below), whose sum is σ = 135788400. Its totient is φ = 19464192.

The previous prime is 52773401. The next prime is 52773517. The reversal of 52773440 is 4437725.

It can be written as a sum of positive squares in 8 ways, for example, as 7744 + 52765696 = 88^2 + 7264^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 52773397 and 52773406.

It is a congruent number.

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, 484106 + ... + 484214.

Almost surely, 2^52773440 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 52773440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67894200).

52773440 is an abundant number, since it is smaller than the sum of its proper divisors (83014960).

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

52773440 is a wasteful number, since it uses less digits than its factorization.

52773440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 52773440 is about 7264.5330200915. The cubic root of 52773440 is about 375.0925756626.

The spelling of 52773440 in words is "fifty-two million, seven hundred seventy-three thousand, four hundred forty".