53219311 has 2 divisors, whose sum is σ = 53219312. Its totient is φ = 53219310.

The previous prime is 53219291. The next prime is 53219317. The reversal of 53219311 is 11391235.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53219311 is a prime.

It is a super-3 number, since 3×53219311³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53219317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26609655 + 26609656.

It is an arithmetic number, because the mean of its divisors is an integer number (26609656).

Almost surely, 2^53219311 is an apocalyptic number.

53219311 is a deficient number, since it is larger than the sum of its proper divisors (1).

53219311 is an equidigital number, since it uses as much as digits as its factorization.

53219311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810, while the sum is 25.

The square root of 53219311 is about 7295.1566809768. The cubic root of 53219311 is about 376.1459723516.

The spelling of 53219311 in words is "fifty-three million, two hundred nineteen thousand, three hundred eleven".