55558173031 has 4 divisors (see below), whose sum is σ = 56913250464. Its totient is φ = 54203095600.

The previous prime is 55558173007. The next prime is 55558173037. The reversal of 55558173031 is 13037185555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55558173031 - 2⁷ = 55558172903 is a prime.

It is a super-2 number, since 2×55558173031² (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 (55558173037) 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, 677538655 + ... + 677538736.

It is an arithmetic number, because the mean of its divisors is an integer number (14228312616).

Almost surely, 2^55558173031 is an apocalyptic number.

55558173031 is a deficient number, since it is larger than the sum of its proper divisors (1355077433).

55558173031 is a wasteful number, since it uses less digits than its factorization.

55558173031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355077432.

The product of its (nonzero) digits is 315000, while the sum is 43.

The spelling of 55558173031 in words is "fifty-five billion, five hundred fifty-eight million, one hundred seventy-three thousand, thirty-one".