52797240 has 96 divisors (see below), whose sum is σ = 181705680. Its totient is φ = 13249536.

The previous prime is 52797229. The next prime is 52797253. The reversal of 52797240 is 4279725.

52797240 is a `hidden beast` number, since 527 + 97 + 2 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 52797195 and 52797204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1807 + ... + 10433.

Almost surely, 2^52797240 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 52797240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90852840).

52797240 is an abundant number, since it is smaller than the sum of its proper divisors (128908440).

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

52797240 is a wasteful number, since it uses less digits than its factorization.

52797240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8661 (or 8654 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 52797240 is about 7266.1709311026. The cubic root of 52797240 is about 375.1489541593.

The spelling of 52797240 in words is "fifty-two million, seven hundred ninety-seven thousand, two hundred forty".