53400431 has 8 divisors (see below), whose sum is σ = 64241280. Its totient is φ = 43362648.

The previous prime is 53400377. The next prime is 53400433. The reversal of 53400431 is 13400435.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53400431 - 2¹⁸ = 53138287 is a prime.

It is a super-2 number, since 2×53400431² = 5703212061971522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53400433) 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 7 ways as a sum of consecutive naturals, for example, 200621 + ... + 200886.

It is an arithmetic number, because the mean of its divisors is an integer number (8030160).

Almost surely, 2^53400431 is an apocalyptic number.

53400431 is a deficient number, since it is larger than the sum of its proper divisors (10840849).

53400431 is a wasteful number, since it uses less digits than its factorization.

53400431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401533.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 53400431 is about 7307.5598526458. The cubic root of 53400431 is about 376.5721987057.

Adding to 53400431 its reverse (13400435), we get a palindrome (66800866).

The spelling of 53400431 in words is "fifty-three million, four hundred thousand, four hundred thirty-one".