55477356171031 has 4 divisors (see below), whose sum is σ = 55603728281200. Its totient is φ = 55350984060864.

The previous prime is 55477356170969. The next prime is 55477356171037. The reversal of 55477356171031 is 13017165377455.

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 55477356171031 - 2³¹ = 55475208687383 is a prime.

It is a super-2 number, since 2×55477356171031² (a number of 28 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 (55477356171037) 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, 63186054426 + ... + 63186055303.

It is an arithmetic number, because the mean of its divisors is an integer number (13900932070300).

Almost surely, 2^{55477356171031} is an apocalyptic number.

55477356171031 is a deficient number, since it is larger than the sum of its proper divisors (126372110169).

55477356171031 is a wasteful number, since it uses less digits than its factorization.

55477356171031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126372110168.

The product of its (nonzero) digits is 9261000, while the sum is 55.

The spelling of 55477356171031 in words is "fifty-five trillion, four hundred seventy-seven billion, three hundred fifty-six million, one hundred seventy-one thousand, thirty-one".