52213750 has 20 divisors (see below), whose sum is σ = 97871796. Its totient is φ = 20885000.

The previous prime is 52213747. The next prime is 52213781. The reversal of 52213750 is 5731225.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 19636 + ... + 22135.

Almost surely, 2^52213750 is an apocalyptic number.

52213750 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

52213750 is a deficient number, since it is larger than the sum of its proper divisors (45658046).

52213750 is an equidigital number, since it uses as much as digits as its factorization.

52213750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41793 (or 41778 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 52213750 is about 7225.9082474108. The cubic root of 52213750 is about 373.7618423335.

Adding to 52213750 its reverse (5731225), we get a palindrome (57944975).

The spelling of 52213750 in words is "fifty-two million, two hundred thirteen thousand, seven hundred fifty".