52206431 has 4 divisors (see below), whose sum is σ = 53191512. Its totient is φ = 51221352.

The previous prime is 52206403. The next prime is 52206437. The reversal of 52206431 is 13460225.

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 52206431 - 2⁶ = 52206367 is a prime.

It is a super-2 number, since 2×52206431² = 5451022875515522, 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 = 52206397 and 52206406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52206437) 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, 492461 + ... + 492566.

It is an arithmetic number, because the mean of its divisors is an integer number (13297878).

Almost surely, 2^52206431 is an apocalyptic number.

52206431 is a deficient number, since it is larger than the sum of its proper divisors (985081).

52206431 is an equidigital number, since it uses as much as digits as its factorization.

52206431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985080.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 52206431 is about 7225.4017881361. The cubic root of 52206431 is about 373.7443776442.

Adding to 52206431 its reverse (13460225), we get a palindrome (65666656).

The spelling of 52206431 in words is "fifty-two million, two hundred six thousand, four hundred thirty-one".