523212250 has 64 divisors (see below), whose sum is σ = 1086359040. Its totient is φ = 187080000.

The previous prime is 523212241. The next prime is 523212251. The reversal of 523212250 is 52212325.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (523212251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166191 + ... + 169309.

It is an arithmetic number, because the mean of its divisors is an integer number (16974360).

Almost surely, 2^523212250 is an apocalyptic number.

523212250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

523212250 is an abundant number, since it is smaller than the sum of its proper divisors (563146790).

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

523212250 is a wasteful number, since it uses less digits than its factorization.

523212250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208 (or 3198 counting only the distinct ones).

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

The square root of 523212250 is about 22873.8333035808. The cubic root of 523212250 is about 805.7975968850.

Adding to 523212250 its reverse (52212325), we get a palindrome (575424575).

The spelling of 523212250 in words is "five hundred twenty-three million, two hundred twelve thousand, two hundred fifty".