53222004 has 36 divisors (see below), whose sum is σ = 146764800. Its totient is φ = 16127760.

The previous prime is 53221999. The next prime is 53222011. The reversal of 53222004 is 40022235.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66804 + ... + 67595.

It is an arithmetic number, because the mean of its divisors is an integer number (4076800).

Almost surely, 2^53222004 is an apocalyptic number.

It is an amenable number.

53222004 is an abundant number, since it is smaller than the sum of its proper divisors (93542796).

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

53222004 is a wasteful number, since it uses less digits than its factorization.

53222004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134420 (or 134415 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 53222004 is about 7295.3412531560. The cubic root of 53222004 is about 376.1523168157.

Adding to 53222004 its reverse (40022235), we get a palindrome (93244239).

The spelling of 53222004 in words is "fifty-three million, two hundred twenty-two thousand, four".