53326021 has 4 divisors (see below), whose sum is σ = 60944032. Its totient is φ = 45708012.

The previous prime is 53326019. The next prime is 53326033. The reversal of 53326021 is 12062335.

53326021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12062335 = 5 ⋅2412467.

It is not a de Polignac number, because 53326021 - 2¹ = 53326019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53325983 and 53326001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53326051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3808995 + ... + 3809008.

It is an arithmetic number, because the mean of its divisors is an integer number (15236008).

Almost surely, 2^53326021 is an apocalyptic number.

It is an amenable number.

53326021 is a deficient number, since it is larger than the sum of its proper divisors (7618011).

53326021 is an equidigital number, since it uses as much as digits as its factorization.

53326021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7618010.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 53326021 is about 7302.4667750014. The cubic root of 53326021 is about 376.3972078433.

Adding to 53326021 its reverse (12062335), we get a palindrome (65388356).

The spelling of 53326021 in words is "fifty-three million, three hundred twenty-six thousand, twenty-one".