55786807229 has 4 divisors (see below), whose sum is σ = 55800796380. Its totient is φ = 55772818080.

The previous prime is 55786807207. The next prime is 55786807253. The reversal of 55786807229 is 92270868755.

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 27292692025 + 28494115204 = 165205^2 + 168802^2 .

It is a cyclic number.

It is not a de Polignac number, because 55786807229 - 2³² = 51491839933 is a prime.

It is a super-2 number, since 2×55786807229² (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 (55786807289) 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, 6988592 + ... + 6996569.

It is an arithmetic number, because the mean of its divisors is an integer number (13950199095).

Almost surely, 2^55786807229 is an apocalyptic number.

It is an amenable number.

55786807229 is a deficient number, since it is larger than the sum of its proper divisors (13989151).

55786807229 is a wasteful number, since it uses less digits than its factorization.

55786807229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13989150.

The product of its (nonzero) digits is 16934400, while the sum is 59.

The spelling of 55786807229 in words is "fifty-five billion, seven hundred eighty-six million, eight hundred seven thousand, two hundred twenty-nine".