55431033401 has 4 divisors (see below), whose sum is σ = 55549729872. Its totient is φ = 55312336932.

The previous prime is 55431033397. The next prime is 55431033433. The reversal of 55431033401 is 10433013455.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55431033401 - 2² = 55431033397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55431033461) 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, 59347535 + ... + 59348468.

It is an arithmetic number, because the mean of its divisors is an integer number (13887432468).

Almost surely, 2^55431033401 is an apocalyptic number.

It is an amenable number.

55431033401 is a deficient number, since it is larger than the sum of its proper divisors (118696471).

55431033401 is a wasteful number, since it uses less digits than its factorization.

55431033401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118696470.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 55431033401 its reverse (10433013455), we get a palindrome (65864046856).

The spelling of 55431033401 in words is "fifty-five billion, four hundred thirty-one million, thirty-three thousand, four hundred one".