53134021 has 2 divisors, whose sum is σ = 53134022. Its totient is φ = 53134020.

The previous prime is 53133947. The next prime is 53134063. The reversal of 53134021 is 12043135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35164900 + 17969121 = 5930^2 + 4239^2 .

It is a cyclic number.

It is not a de Polignac number, because 53134021 - 2¹³ = 53125829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53134021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53134321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26567010 + 26567011.

It is an arithmetic number, because the mean of its divisors is an integer number (26567011).

Almost surely, 2^53134021 is an apocalyptic number.

It is an amenable number.

53134021 is a deficient number, since it is larger than the sum of its proper divisors (1).

53134021 is an equidigital number, since it uses as much as digits as its factorization.

53134021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 53134021 is about 7289.3086777828. The cubic root of 53134021 is about 375.9449260100.

Adding to 53134021 its reverse (12043135), we get a palindrome (65177156).

The spelling of 53134021 in words is "fifty-three million, one hundred thirty-four thousand, twenty-one".