53321992 has 8 divisors (see below), whose sum is σ = 99978750. Its totient is φ = 26660992.

The previous prime is 53321977. The next prime is 53321993. The reversal of 53321992 is 29912335.

It can be written as a sum of positive squares in only one way, i.e., 53085796 + 236196 = 7286^2 + 486^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (53321993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3332617 + ... + 3332632.

Almost surely, 2^53321992 is an apocalyptic number.

It is an amenable number.

53321992 is a deficient number, since it is larger than the sum of its proper divisors (46656758).

53321992 is a wasteful number, since it uses less digits than its factorization.

53321992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6665255 (or 6665251 counting only the distinct ones).

The product of its digits is 14580, while the sum is 34.

The square root of 53321992 is about 7302.1909041054. The cubic root of 53321992 is about 376.3877281527.

The spelling of 53321992 in words is "fifty-three million, three hundred twenty-one thousand, nine hundred ninety-two".