53021322 has 48 divisors (see below), whose sum is σ = 119584608. Its totient is φ = 16964640.

The previous prime is 53021303. The next prime is 53021327. The reversal of 53021322 is 22312035.

53021322 is a `hidden beast` number, since 530 + 2 + 132 + 2 = 666.

It is a super-2 number, since 2×53021322² = 5622521173255368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 53021295 and 53021304.

It is not an unprimeable number, because it can be changed into a prime (53021327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46653 + ... + 47775.

It is an arithmetic number, because the mean of its divisors is an integer number (2491346).

Almost surely, 2^53021322 is an apocalyptic number.

53021322 is an abundant number, since it is smaller than the sum of its proper divisors (66563286).

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

53021322 is a wasteful number, since it uses less digits than its factorization.

53021322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235 (or 1232 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 53021322 is about 7281.5741429996. The cubic root of 53021322 is about 375.6789406969.

Adding to 53021322 its reverse (22312035), we get a palindrome (75333357).

The spelling of 53021322 in words is "fifty-three million, twenty-one thousand, three hundred twenty-two".