52277140 has 48 divisors (see below), whose sum is σ = 114443280. Its totient is φ = 20034560.

The previous prime is 52277123. The next prime is 52277143. The reversal of 52277140 is 4177225.

It can be written as a sum of positive squares in 8 ways, for example, as 264196 + 52012944 = 514^2 + 7212^2 .

It is a junction number, because it is equal to n+sod(n) for n = 52277099 and 52277108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52277143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100080 + ... + 100600.

It is an arithmetic number, because the mean of its divisors is an integer number (2384235).

Almost surely, 2^52277140 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 52277140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57221640).

52277140 is an abundant number, since it is smaller than the sum of its proper divisors (62166140).

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

52277140 is a wasteful number, since it uses less digits than its factorization.

52277140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 52277140 is about 7230.2932167375. The cubic root of 52277140 is about 373.9130361065.

The spelling of 52277140 in words is "fifty-two million, two hundred seventy-seven thousand, one hundred forty".