55550302777 has 4 divisors (see below), whose sum is σ = 55550865636. Its totient is φ = 55549739920.

The previous prime is 55550302741. The next prime is 55550302783. The reversal of 55550302777 is 77720305555.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 77720305555 = 5 ⋅15544061111.

It can be written as a sum of positive squares in 2 ways, for example, as 22727371536 + 32822931241 = 150756^2 + 181171^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55550302777 is a prime.

It is a super-2 number, since 2×55550302777² (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 (55550308777) 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, 89974 + ... + 345247.

It is an arithmetic number, because the mean of its divisors is an integer number (13887716409).

Almost surely, 2^55550302777 is an apocalyptic number.

It is an amenable number.

55550302777 is a deficient number, since it is larger than the sum of its proper divisors (562859).

55550302777 is a wasteful number, since it uses less digits than its factorization.

55550302777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562858.

The product of its (nonzero) digits is 1286250, while the sum is 46.

The spelling of 55550302777 in words is "fifty-five billion, five hundred fifty million, three hundred two thousand, seven hundred seventy-seven".