53511553 has 2 divisors, whose sum is σ = 53511554. Its totient is φ = 53511552.

The previous prime is 53511551. The next prime is 53511559. The reversal of 53511553 is 35511535.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52751169 + 760384 = 7263^2 + 872^2 .

It is a cyclic number.

It is not a de Polignac number, because 53511553 - 2¹ = 53511551 is a prime.

Together with 53511551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (53511551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26755776 + 26755777.

It is an arithmetic number, because the mean of its divisors is an integer number (26755777).

Almost surely, 2^53511553 is an apocalyptic number.

It is an amenable number.

53511553 is a deficient number, since it is larger than the sum of its proper divisors (1).

53511553 is an equidigital number, since it uses as much as digits as its factorization.

53511553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5625, while the sum is 28.

The square root of 53511553 is about 7315.1591233547. The cubic root of 53511553 is about 376.8332232138.

The spelling of 53511553 in words is "fifty-three million, five hundred eleven thousand, five hundred fifty-three".