52281250 has 56 divisors (see below), whose sum is σ = 112498560. Its totient is φ = 17850000.

The previous prime is 52281241. The next prime is 52281263. The reversal of 52281250 is 5218225.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 218631 + ... + 218869.

Almost surely, 2^52281250 is an apocalyptic number.

52281250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

52281250 is an abundant number, since it is smaller than the sum of its proper divisors (60217310).

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

52281250 is an frugal number, since it uses more digits than its factorization.

52281250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 52281250 is about 7230.5774319898. The cubic root of 52281250 is about 373.9228347955.

Adding to 52281250 its reverse (5218225), we get a palindrome (57499475).

The spelling of 52281250 in words is "fifty-two million, two hundred eighty-one thousand, two hundred fifty".