52663140 has 36 divisors (see below), whose sum is σ = 159745404. Its totient is φ = 14043456.

The previous prime is 52663133. The next prime is 52663151. The reversal of 52663140 is 4136625.

52663140 is a `hidden beast` number, since 5 + 26 + 631 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 29680704 + 22982436 = 5448^2 + 4794^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146107 + ... + 146466.

Almost surely, 2^52663140 is an apocalyptic number.

It is an amenable number.

52663140 is an abundant number, since it is smaller than the sum of its proper divisors (107082264).

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

52663140 is a wasteful number, since it uses less digits than its factorization.

52663140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292588 (or 292583 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 52663140 is about 7256.9373705441. The cubic root of 52663140 is about 374.8310705790.

Adding to 52663140 its reverse (4136625), we get a palindrome (56799765).

The spelling of 52663140 in words is "fifty-two million, six hundred sixty-three thousand, one hundred forty".