53688311 has 16 divisors (see below), whose sum is σ = 57915648. Its totient is φ = 49670400.

The previous prime is 53688307. The next prime is 53688343. The reversal of 53688311 is 11388635.

It is a cyclic number.

It is not a de Polignac number, because 53688311 - 2² = 53688307 is a prime.

It is a Duffinian number.

53688311 is a modest number, since divided by 688311 gives 53 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53688391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66965 + ... + 67761.

It is an arithmetic number, because the mean of its divisors is an integer number (3619728).

Almost surely, 2^53688311 is an apocalyptic number.

53688311 is a deficient number, since it is larger than the sum of its proper divisors (4227337).

53688311 is a wasteful number, since it uses less digits than its factorization.

53688311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922.

The product of its digits is 17280, while the sum is 35.

The square root of 53688311 is about 7327.2307865933. The cubic root of 53688311 is about 377.2476825085.

The spelling of 53688311 in words is "fifty-three million, six hundred eighty-eight thousand, three hundred eleven".