53425021 has 16 divisors (see below), whose sum is σ = 60407424. Its totient is φ = 46880064.

The previous prime is 53425019. The next prime is 53425037. The reversal of 53425021 is 12052435.

It is a cyclic number.

It is not a de Polignac number, because 53425021 - 2¹ = 53425019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53424983 and 53425001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53428021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58450 + ... + 59356.

It is an arithmetic number, because the mean of its divisors is an integer number (3775464).

Almost surely, 2^53425021 is an apocalyptic number.

It is an amenable number.

53425021 is a deficient number, since it is larger than the sum of its proper divisors (6982403).

53425021 is a wasteful number, since it uses less digits than its factorization.

53425021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 53425021 is about 7309.2421631794. The cubic root of 53425021 is about 376.6299915562.

Adding to 53425021 its reverse (12052435), we get a palindrome (65477456).

The spelling of 53425021 in words is "fifty-three million, four hundred twenty-five thousand, twenty-one".