52252140 has 48 divisors (see below), whose sum is σ = 150266592. Its totient is φ = 13556736.

The previous prime is 52252121. The next prime is 52252141. The reversal of 52252140 is 4125225.

It is a happy number.

It is a super-2 number, since 2×52252140² = 5460572269159200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52252141) 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, 9549 + ... + 13988.

It is an arithmetic number, because the mean of its divisors is an integer number (3130554).

Almost surely, 2^52252140 is an apocalyptic number.

It is an amenable number.

52252140 is an abundant number, since it is smaller than the sum of its proper divisors (98014452).

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

52252140 is a wasteful number, since it uses less digits than its factorization.

52252140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23586 (or 23584 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 52252140 is about 7228.5641727801. The cubic root of 52252140 is about 373.8534223097.

Adding to 52252140 its reverse (4125225), we get a palindrome (56377365).

The spelling of 52252140 in words is "fifty-two million, two hundred fifty-two thousand, one hundred forty".