53311691 has 2 divisors, whose sum is σ = 53311692. Its totient is φ = 53311690.

The previous prime is 53311673. The next prime is 53311717. The reversal of 53311691 is 19611335.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53311691 - 2⁶ = 53311627 is a prime.

It is equal to p_3187640 and since 53311691 and 3187640 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (53311091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26655845 + 26655846.

It is an arithmetic number, because the mean of its divisors is an integer number (26655846).

Almost surely, 2^53311691 is an apocalyptic number.

53311691 is a deficient number, since it is larger than the sum of its proper divisors (1).

53311691 is an equidigital number, since it uses as much as digits as its factorization.

53311691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2430, while the sum is 29.

The square root of 53311691 is about 7301.4855337801. The cubic root of 53311691 is about 376.3634891252.

The spelling of 53311691 in words is "fifty-three million, three hundred eleven thousand, six hundred ninety-one".