53420431 has 2 divisors, whose sum is σ = 53420432. Its totient is φ = 53420430.

The previous prime is 53420413. The next prime is 53420453. The reversal of 53420431 is 13402435.

Together with previous prime (53420413) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (53420453) can be obtained adding 53420431 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53420431 - 2⁵ = 53420399 is a prime.

It is a super-2 number, since 2×53420431² = 5707484896451522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53420401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26710215 + 26710216.

It is an arithmetic number, because the mean of its divisors is an integer number (26710216).

Almost surely, 2^53420431 is an apocalyptic number.

53420431 is a deficient number, since it is larger than the sum of its proper divisors (1).

53420431 is an equidigital number, since it uses as much as digits as its factorization.

53420431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 53420431 is about 7308.9281703954. The cubic root of 53420431 is about 376.6192052172.

Adding to 53420431 its reverse (13402435), we get a palindrome (66822866).

The spelling of 53420431 in words is "fifty-three million, four hundred twenty thousand, four hundred thirty-one".