55255342431 has 16 divisors (see below), whose sum is σ = 76060505088. Its totient is φ = 35643854400.

The previous prime is 55255342391. The next prime is 55255342433. The reversal of 55255342431 is 13424355255.

It is not a de Polignac number, because 55255342431 - 2⁶ = 55255342367 is a prime.

It is a super-2 number, since 2×55255342431² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55255342431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55255342433) 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, 744571 + ... + 815411.

It is an arithmetic number, because the mean of its divisors is an integer number (4753781568).

Almost surely, 2^55255342431 is an apocalyptic number.

55255342431 is a deficient number, since it is larger than the sum of its proper divisors (20805162657).

55255342431 is a wasteful number, since it uses less digits than its factorization.

55255342431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79262.

The product of its digits is 360000, while the sum is 39.

Adding to 55255342431 its reverse (13424355255), we get a palindrome (68679697686).

The spelling of 55255342431 in words is "fifty-five billion, two hundred fifty-five million, three hundred forty-two thousand, four hundred thirty-one".