53125240 has 32 divisors (see below), whose sum is σ = 136608480. Its totient is φ = 18214272.

The previous prime is 53125223. The next prime is 53125277. The reversal of 53125240 is 4252135.

It is a super-2 number, since 2×53125240² = 5644582250115200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94587 + ... + 95146.

It is an arithmetic number, because the mean of its divisors is an integer number (4269015).

Almost surely, 2^53125240 is an apocalyptic number.

It is an amenable number.

53125240 is an abundant number, since it is smaller than the sum of its proper divisors (83483240).

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

53125240 is a wasteful number, since it uses less digits than its factorization.

53125240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189751 (or 189747 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 53125240 is about 7288.7063324022. The cubic root of 53125240 is about 375.9242151472.

Adding to 53125240 its reverse (4252135), we get a palindrome (57377375).

The spelling of 53125240 in words is "fifty-three million, one hundred twenty-five thousand, two hundred forty".