53221061 has 8 divisors (see below), whose sum is σ = 56229120. Its totient is φ = 50291248.

The previous prime is 53221043. The next prime is 53221073. The reversal of 53221061 is 16012235.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53221061 - 2⁶ = 53220997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53221031) 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, 18161 + ... + 20886.

It is an arithmetic number, because the mean of its divisors is an integer number (7028640).

Almost surely, 2^53221061 is an apocalyptic number.

It is an amenable number.

53221061 is a deficient number, since it is larger than the sum of its proper divisors (3008059).

53221061 is a wasteful number, since it uses less digits than its factorization.

53221061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39123.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 53221061 is about 7295.2766225826. The cubic root of 53221061 is about 376.1500952175.

Adding to 53221061 its reverse (16012235), we get a palindrome (69233296).

The spelling of 53221061 in words is "fifty-three million, two hundred twenty-one thousand, sixty-one".