53511331 has 2 divisors, whose sum is σ = 53511332. Its totient is φ = 53511330.

The previous prime is 53511259. The next prime is 53511343. The reversal of 53511331 is 13311535.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53511331 - 2⁹ = 53510819 is a prime.

It is a super-2 number, since 2×53511331² = 5726925090783122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53511131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26755665 + 26755666.

It is an arithmetic number, because the mean of its divisors is an integer number (26755666).

Almost surely, 2^53511331 is an apocalyptic number.

53511331 is a deficient number, since it is larger than the sum of its proper divisors (1).

53511331 is an equidigital number, since it uses as much as digits as its factorization.

53511331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 675, while the sum is 22.

The square root of 53511331 is about 7315.1439493697. The cubic root of 53511331 is about 376.8327020983.

Adding to 53511331 its reverse (13311535), we get a palindrome (66822866).

The spelling of 53511331 in words is "fifty-three million, five hundred eleven thousand, three hundred thirty-one".