53479921 has 4 divisors (see below), whose sum is σ = 58341744. Its totient is φ = 48618100.

The previous prime is 53479879. The next prime is 53479961. The reversal of 53479921 is 12997435.

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.

It is a cyclic number.

It is not a de Polignac number, because 53479921 - 2⁷ = 53479793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53479961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2430895 + ... + 2430916.

It is an arithmetic number, because the mean of its divisors is an integer number (14585436).

Almost surely, 2^53479921 is an apocalyptic number.

It is an amenable number.

53479921 is a deficient number, since it is larger than the sum of its proper divisors (4861823).

53479921 is a wasteful number, since it uses less digits than its factorization.

53479921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4861822.

The product of its digits is 68040, while the sum is 40.

The square root of 53479921 is about 7312.9967181724. The cubic root of 53479921 is about 376.7589567713.

It can be divided in two parts, 53 and 479921, that added together give a palindrome (479974).

The spelling of 53479921 in words is "fifty-three million, four hundred seventy-nine thousand, nine hundred twenty-one".