521752452 has 48 divisors (see below), whose sum is σ = 1338984192. Its totient is φ = 157121280.

The previous prime is 521752403. The next prime is 521752453. The reversal of 521752452 is 254257125.

It is not an unprimeable number, because it can be changed into a prime (521752453) 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, 28249 + ... + 42912.

It is an arithmetic number, because the mean of its divisors is an integer number (27895504).

Almost surely, 2^521752452 is an apocalyptic number.

521752452 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

521752452 is an abundant number, since it is smaller than the sum of its proper divisors (817231740).

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

521752452 is a wasteful number, since it uses less digits than its factorization.

521752452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71228 (or 71226 counting only the distinct ones).

The product of its digits is 28000, while the sum is 33.

The square root of 521752452 is about 22841.9012343544. The cubic root of 521752452 is about 805.0474886790.

The spelling of 521752452 in words is "five hundred twenty-one million, seven hundred fifty-two thousand, four hundred fifty-two".