53121634 has 16 divisors (see below), whose sum is σ = 84585600. Its totient is φ = 24934464.

The previous prime is 53121623. The next prime is 53121637. The reversal of 53121634 is 43612135.

It is a junction number, because it is equal to n+sod(n) for n = 53121599 and 53121608.

It is not an unprimeable number, because it can be changed into a prime (53121637) 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 7 ways as a sum of consecutive naturals, for example, 13147 + ... + 16705.

It is an arithmetic number, because the mean of its divisors is an integer number (5286600).

Almost surely, 2^53121634 is an apocalyptic number.

53121634 is a deficient number, since it is larger than the sum of its proper divisors (31463966).

53121634 is a wasteful number, since it uses less digits than its factorization.

53121634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4017.

The product of its digits is 2160, while the sum is 25.

The square root of 53121634 is about 7288.4589592039. The cubic root of 53121634 is about 375.9157093761.

Adding to 53121634 its reverse (43612135), we get a palindrome (96733769).

The spelling of 53121634 in words is "fifty-three million, one hundred twenty-one thousand, six hundred thirty-four".