53409311 has 16 divisors (see below), whose sum is σ = 57108480. Its totient is φ = 49865760.

The previous prime is 53409277. The next prime is 53409353. The reversal of 53409311 is 11390435.

It is a cyclic number.

It is not a de Polignac number, because 53409311 - 2¹⁰ = 53408287 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 (53409011) 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 15 ways as a sum of consecutive naturals, for example, 137105 + ... + 137493.

It is an arithmetic number, because the mean of its divisors is an integer number (3569280).

Almost surely, 2^53409311 is an apocalyptic number.

53409311 is a deficient number, since it is larger than the sum of its proper divisors (3699169).

53409311 is a wasteful number, since it uses less digits than its factorization.

53409311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 53409311 is about 7308.1674173489. The cubic root of 53409311 is about 376.5930710452.

Adding to 53409311 its reverse (11390435), we get a palindrome (64799746).

The spelling of 53409311 in words is "fifty-three million, four hundred nine thousand, three hundred eleven".