52124240 has 60 divisors (see below), whose sum is σ = 140985396. Its totient is φ = 17869824.

The previous prime is 52124221. The next prime is 52124291. The reversal of 52124240 is 4242125.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6210064 + 45914176 = 2492^2 + 6776^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 2729 + ... + 10568.

Almost surely, 2^52124240 is an apocalyptic number.

It is an amenable number.

52124240 is an abundant number, since it is smaller than the sum of its proper divisors (88861156).

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

52124240 is a wasteful number, since it uses less digits than its factorization.

52124240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13324 (or 13311 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 52124240 is about 7219.7119056095. The cubic root of 52124240 is about 373.5481402705.

Adding to 52124240 its reverse (4242125), we get a palindrome (56366365).

The spelling of 52124240 in words is "fifty-two million, one hundred twenty-four thousand, two hundred forty".