52357140 has 144 divisors (see below), whose sum is σ = 179053056. Its totient is φ = 12268800.

The previous prime is 52357117. The next prime is 52357157. The reversal of 52357140 is 4175325.

It is a happy number.

52357140 is a `hidden beast` number, since 52 + 3 + 571 + 40 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60954 + ... + 61806.

It is an arithmetic number, because the mean of its divisors is an integer number (1243424).

Almost surely, 2^52357140 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 52357140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89526528).

52357140 is an abundant number, since it is smaller than the sum of its proper divisors (126695916).

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

52357140 is a wasteful number, since it uses less digits than its factorization.

52357140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910 (or 905 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 52357140 is about 7235.8233809291. The cubic root of 52357140 is about 374.1036726329.

The spelling of 52357140 in words is "fifty-two million, three hundred fifty-seven thousand, one hundred forty".