52055640 has 288 divisors, whose sum is σ = 212874480. Its totient is φ = 10934784.

The previous prime is 52055629. The next prime is 52055677. The reversal of 52055640 is 4655025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 229207 + ... + 229433.

Almost surely, 2^52055640 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 52055640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106437240).

52055640 is an abundant number, since it is smaller than the sum of its proper divisors (160818840).

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

52055640 is a wasteful number, since it uses less digits than its factorization.

52055640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 52055640 is about 7214.9594593456. The cubic root of 52055640 is about 373.3841944595.

The spelling of 52055640 in words is "fifty-two million, fifty-five thousand, six hundred forty".