52720022 has 16 divisors (see below), whose sum is σ = 84488640. Its totient is φ = 24598728.

The previous prime is 52720013. The next prime is 52720027. The reversal of 52720022 is 22002725.

It is a junction number, because it is equal to n+sod(n) for n = 52719976 and 52720003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52720027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7808 + ... + 12899.

It is an arithmetic number, because the mean of its divisors is an integer number (5280540).

Almost surely, 2^52720022 is an apocalyptic number.

52720022 is a deficient number, since it is larger than the sum of its proper divisors (31768618).

52720022 is a wasteful number, since it uses less digits than its factorization.

52720022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20795.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 52720022 is about 7260.8554592417. The cubic root of 52720022 is about 374.9659749870.

Adding to 52720022 its reverse (22002725), we get a palindrome (74722747).

The spelling of 52720022 in words is "fifty-two million, seven hundred twenty thousand, twenty-two".