53311311 has 8 divisors (see below), whose sum is σ = 78979760. Its totient is φ = 35540856.

The previous prime is 53311259. The next prime is 53311373. The reversal of 53311311 is 11311335.

53311311 is a `hidden beast` number, since 533 + 1 + 131 + 1 = 666.

It is not a de Polignac number, because 53311311 - 2⁷ = 53311183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53311381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 987220 + ... + 987273.

It is an arithmetic number, because the mean of its divisors is an integer number (9872470).

Almost surely, 2^53311311 is an apocalyptic number.

53311311 is a deficient number, since it is larger than the sum of its proper divisors (25668449).

53311311 is a wasteful number, since it uses less digits than its factorization.

53311311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974502 (or 1974496 counting only the distinct ones).

The product of its digits is 135, while the sum is 18.

The square root of 53311311 is about 7301.4595116319. The cubic root of 53311311 is about 376.3625948970.

Adding to 53311311 its reverse (11311335), we get a palindrome (64622646).

It can be divided in two parts, 53 and 311311, that added together give a square (311364 = 558²).

The spelling of 53311311 in words is "fifty-three million, three hundred eleven thousand, three hundred eleven".