52018431 has 16 divisors (see below), whose sum is σ = 71971200. Its totient is φ = 33379808.

The previous prime is 52018361. The next prime is 52018457. The reversal of 52018431 is 13481025.

It is a cyclic number.

It is not a de Polignac number, because 52018431 - 2⁷ = 52018303 is a prime.

It is a super-2 number, since 2×52018431² = 5411834327403522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52018531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35740 + ... + 37166.

It is an arithmetic number, because the mean of its divisors is an integer number (4498200).

Almost surely, 2^52018431 is an apocalyptic number.

52018431 is a deficient number, since it is larger than the sum of its proper divisors (19952769).

52018431 is a wasteful number, since it uses less digits than its factorization.

52018431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 52018431 is about 7212.3803976219. The cubic root of 52018431 is about 373.2952091349.

Adding to 52018431 its reverse (13481025), we get a palindrome (65499456).

The spelling of 52018431 in words is "fifty-two million, eighteen thousand, four hundred thirty-one".