53356540 has 48 divisors (see below), whose sum is σ = 119599200. Its totient is φ = 19924992.

The previous prime is 53356529. The next prime is 53356543. The reversal of 53356540 is 4565335.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53356543) 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, 46696 + ... + 47824.

It is an arithmetic number, because the mean of its divisors is an integer number (2491650).

Almost surely, 2^53356540 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 53356540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59799600).

53356540 is an abundant number, since it is smaller than the sum of its proper divisors (66242660).

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

53356540 is a wasteful number, since it uses less digits than its factorization.

53356540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294 (or 1292 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 31.

The square root of 53356540 is about 7304.5561124547. The cubic root of 53356540 is about 376.4689994093.

The spelling of 53356540 in words is "fifty-three million, three hundred fifty-six thousand, five hundred forty".