52555140 has 216 divisors, whose sum is σ = 185902080. Its totient is φ = 11975040.

The previous prime is 52555103. The next prime is 52555147. The reversal of 52555140 is 4155525.

It is not an unprimeable number, because it can be changed into a prime (52555147) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 413757 + ... + 413883.

Almost surely, 2^52555140 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 52555140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92951040).

52555140 is an abundant number, since it is smaller than the sum of its proper divisors (133346940).

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

52555140 is a wasteful number, since it uses less digits than its factorization.

52555140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 52555140 is about 7249.4923960233. The cubic root of 52555140 is about 374.5746644214.

The spelling of 52555140 in words is "fifty-two million, five hundred fifty-five thousand, one hundred forty".