53154444021 has 32 divisors (see below), whose sum is σ = 81317523456. Its totient is φ = 30254016000.

The previous prime is 53154443981. The next prime is 53154444043. The reversal of 53154444021 is 12044445135.

It is a happy number.

It is not a de Polignac number, because 53154444021 - 2⁹ = 53154443509 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53154444071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13589056 + ... + 13592966.

It is an arithmetic number, because the mean of its divisors is an integer number (2541172608).

Almost surely, 2^53154444021 is an apocalyptic number.

It is an amenable number.

53154444021 is a deficient number, since it is larger than the sum of its proper divisors (28163079435).

53154444021 is a wasteful number, since it uses less digits than its factorization.

53154444021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6313.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 53154444021 its reverse (12044445135), we get a palindrome (65198889156).

The spelling of 53154444021 in words is "fifty-three billion, one hundred fifty-four million, four hundred forty-four thousand, twenty-one".