52581311 has 4 divisors (see below), whose sum is σ = 53863824. Its totient is φ = 51298800.

The previous prime is 52581299. The next prime is 52581313. The reversal of 52581311 is 11318525.

52581311 = T₁₅₈₁ + T₁₅₈₂ + ... + T₁₆₂₁.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52581311 - 2¹⁰ = 52580287 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 (52581313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641195 + ... + 641276.

It is an arithmetic number, because the mean of its divisors is an integer number (13465956).

Almost surely, 2^52581311 is an apocalyptic number.

52581311 is a deficient number, since it is larger than the sum of its proper divisors (1282513).

52581311 is a wasteful number, since it uses less digits than its factorization.

52581311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282512.

The product of its digits is 1200, while the sum is 26.

The square root of 52581311 is about 7251.2971942957. The cubic root of 52581311 is about 374.6368300300.

Adding to 52581311 its reverse (11318525), we get a palindrome (63899836).

The spelling of 52581311 in words is "fifty-two million, five hundred eighty-one thousand, three hundred eleven".