53311553 has 2 divisors, whose sum is σ = 53311554. Its totient is φ = 53311552.

The previous prime is 53311547. The next prime is 53311613. The reversal of 53311553 is 35511335.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41319184 + 11992369 = 6428^2 + 3463^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53311553 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (53311513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26655776 + 26655777.

It is an arithmetic number, because the mean of its divisors is an integer number (26655777).

Almost surely, 2^53311553 is an apocalyptic number.

It is an amenable number.

53311553 is a deficient number, since it is larger than the sum of its proper divisors (1).

53311553 is an equidigital number, since it uses as much as digits as its factorization.

53311553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3375, while the sum is 26.

The square root of 53311553 is about 7301.4760836423. The cubic root of 53311553 is about 376.3631643797.

Adding to 53311553 its reverse (35511335), we get a palindrome (88822888).

The spelling of 53311553 in words is "fifty-three million, three hundred eleven thousand, five hundred fifty-three".