52221747 has 32 divisors (see below), whose sum is σ = 75985920. Its totient is φ = 31795200.

The previous prime is 52221733. The next prime is 52221751. The reversal of 52221747 is 74712225.

It is not a de Polignac number, because 52221747 - 2⁴ = 52221731 is a prime.

It is a super-2 number, since 2×52221747² = 5454221719464018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52221047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 270483 + ... + 270675.

It is an arithmetic number, because the mean of its divisors is an integer number (2374560).

Almost surely, 2^52221747 is an apocalyptic number.

52221747 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

52221747 is a deficient number, since it is larger than the sum of its proper divisors (23764173).

52221747 is a wasteful number, since it uses less digits than its factorization.

52221747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363.

The product of its digits is 7840, while the sum is 30.

The square root of 52221747 is about 7226.4615822683. The cubic root of 52221747 is about 373.7809230090.

The spelling of 52221747 in words is "fifty-two million, two hundred twenty-one thousand, seven hundred forty-seven".