55042121431 has 8 divisors (see below), whose sum is σ = 60051744144. Its totient is φ = 50033464320.

The previous prime is 55042121359. The next prime is 55042121443. The reversal of 55042121431 is 13412124055.

55042121431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 55042121431 - 2¹¹ = 55042119383 is a prime.

It is a super-2 number, since 2×55042121431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55042121431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55042181431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119530 + ... + 352663.

It is an arithmetic number, because the mean of its divisors is an integer number (7506468018).

Almost surely, 2^55042121431 is an apocalyptic number.

55042121431 is a deficient number, since it is larger than the sum of its proper divisors (5009622713).

55042121431 is a wasteful number, since it uses less digits than its factorization.

55042121431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482801.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 55042121431 its reverse (13412124055), we get a palindrome (68454245486).

The spelling of 55042121431 in words is "fifty-five billion, forty-two million, one hundred twenty-one thousand, four hundred thirty-one".