55535513431 has 4 divisors (see below), whose sum is σ = 55536065200. Its totient is φ = 55534961664.

The previous prime is 55535513417. The next prime is 55535513477. The reversal of 55535513431 is 13431553555.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 55535513431 - 2⁹ = 55535512919 is a prime.

It is a super-2 number, since 2×55535513431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55535513731) 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, 77226 + ... + 342103.

It is an arithmetic number, because the mean of its divisors is an integer number (13884016300).

Almost surely, 2^55535513431 is an apocalyptic number.

55535513431 is a deficient number, since it is larger than the sum of its proper divisors (551769).

55535513431 is a wasteful number, since it uses less digits than its factorization.

55535513431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551768.

The product of its digits is 337500, while the sum is 40.

The spelling of 55535513431 in words is "fifty-five billion, five hundred thirty-five million, five hundred thirteen thousand, four hundred thirty-one".