52135531 has 4 divisors (see below), whose sum is σ = 59583472. Its totient is φ = 44687592.

The previous prime is 52135529. The next prime is 52135543. The reversal of 52135531 is 13553125.

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 52135531 - 2¹ = 52135529 is a prime.

It is a super-2 number, since 2×52135531² = 5436227185303922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52135496 and 52135505.

It is not an unprimeable number, because it can be changed into a prime (52135561) 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, 3723960 + ... + 3723973.

It is an arithmetic number, because the mean of its divisors is an integer number (14895868).

Almost surely, 2^52135531 is an apocalyptic number.

52135531 is a deficient number, since it is larger than the sum of its proper divisors (7447941).

52135531 is an equidigital number, since it uses as much as digits as its factorization.

52135531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7447940.

The product of its digits is 2250, while the sum is 25.

The square root of 52135531 is about 7220.4938196774. The cubic root of 52135531 is about 373.5751106240.

Adding to 52135531 its reverse (13553125), we get a palindrome (65688656).

The spelling of 52135531 in words is "fifty-two million, one hundred thirty-five thousand, five hundred thirty-one".