55147652881 has 4 divisors (see below), whose sum is σ = 55154455092. Its totient is φ = 55140850672.

The previous prime is 55147652867. The next prime is 55147652927. The reversal of 55147652881 is 18825674155.

It is a happy number.

55147652881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 29033092881 + 26114560000 = 170391^2 + 161600^2 .

It is a cyclic number.

It is not a de Polignac number, because 55147652881 - 2⁹ = 55147652369 is a prime.

It is a super-2 number, since 2×55147652881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55147052881) 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, 3388930 + ... + 3405163.

It is an arithmetic number, because the mean of its divisors is an integer number (13788613773).

Almost surely, 2^55147652881 is an apocalyptic number.

It is an amenable number.

55147652881 is a deficient number, since it is larger than the sum of its proper divisors (6802211).

55147652881 is an equidigital number, since it uses as much as digits as its factorization.

55147652881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6802210.

The product of its digits is 2688000, while the sum is 52.

The spelling of 55147652881 in words is "fifty-five billion, one hundred forty-seven million, six hundred fifty-two thousand, eight hundred eighty-one".