52221748 has 12 divisors (see below), whose sum is σ = 93112740. Its totient is φ = 25618112.

The previous prime is 52221733. The next prime is 52221751. The reversal of 52221748 is 84712225.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30338064 + 21883684 = 5508^2 + 4678^2 .

It is a super-2 number, since 2×52221748² = 5454221928351008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122953 + ... + 123376.

It is an arithmetic number, because the mean of its divisors is an integer number (7759395).

Almost surely, 2^52221748 is an apocalyptic number.

It is an amenable number.

52221748 is a deficient number, since it is larger than the sum of its proper divisors (40890992).

52221748 is a wasteful number, since it uses less digits than its factorization.

52221748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246386 (or 246384 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 52221748 is about 7226.4616514585. The cubic root of 52221748 is about 373.7809253949.

The spelling of 52221748 in words is "fifty-two million, two hundred twenty-one thousand, seven hundred forty-eight".