55012867277 has 4 divisors (see below), whose sum is σ = 55022495676. Its totient is φ = 55003238880.

The previous prime is 55012867243. The next prime is 55012867297. The reversal of 55012867277 is 77276821055.

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

It can be written as a sum of positive squares in 2 ways, for example, as 41626608676 + 13386258601 = 204026^2 + 115699^2 .

It is a cyclic number.

It is not a de Polignac number, because 55012867277 - 2¹² = 55012863181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55012867297) 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, 4805624 + ... + 4817057.

It is an arithmetic number, because the mean of its divisors is an integer number (13755623919).

Almost surely, 2^55012867277 is an apocalyptic number.

It is an amenable number.

55012867277 is a deficient number, since it is larger than the sum of its proper divisors (9628399).

55012867277 is an equidigital number, since it uses as much as digits as its factorization.

55012867277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9628398.

The product of its (nonzero) digits is 1646400, while the sum is 50.

The spelling of 55012867277 in words is "fifty-five billion, twelve million, eight hundred sixty-seven thousand, two hundred seventy-seven".