55115477031 has 8 divisors (see below), whose sum is σ = 73808208880. Its totient is φ = 36583198272.

The previous prime is 55115477023. The next prime is 55115477051. The reversal of 55115477031 is 13077451155.

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

It is not a de Polignac number, because 55115477031 - 2³ = 55115477023 is a prime.

It is a super-2 number, since 2×55115477031² (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 (55115477051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40112470 + ... + 40113843.

It is an arithmetic number, because the mean of its divisors is an integer number (9226026110).

Almost surely, 2^55115477031 is an apocalyptic number.

55115477031 is a deficient number, since it is larger than the sum of its proper divisors (18692731849).

55115477031 is a wasteful number, since it uses less digits than its factorization.

55115477031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80226545.

The product of its (nonzero) digits is 73500, while the sum is 39.

The spelling of 55115477031 in words is "fifty-five billion, one hundred fifteen million, four hundred seventy-seven thousand, thirty-one".