55412431 has 2 divisors, whose sum is σ = 55412432. Its totient is φ = 55412430.

The previous prime is 55412429. The next prime is 55412459. The reversal of 55412431 is 13421455.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55412431 - 2¹ = 55412429 is a prime.

It is a super-2 number, since 2×55412431² = 6141075018659522, which contains 22 as substring.

Together with 55412429, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 55412396 and 55412405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55412471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27706215 + 27706216.

It is an arithmetic number, because the mean of its divisors is an integer number (27706216).

Almost surely, 2^55412431 is an apocalyptic number.

55412431 is a deficient number, since it is larger than the sum of its proper divisors (1).

55412431 is an equidigital number, since it uses as much as digits as its factorization.

55412431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 25.

The square root of 55412431 is about 7443.9526462760. The cubic root of 55412431 is about 381.2434589579.

Adding to 55412431 its reverse (13421455), we get a palindrome (68833886).

The spelling of 55412431 in words is "fifty-five million, four hundred twelve thousand, four hundred thirty-one".