55627777 has 8 divisors (see below), whose sum is σ = 58150080. Its totient is φ = 53114160.

The previous prime is 55627751. The next prime is 55627787. The reversal of 55627777 is 77772655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55627777 - 2¹¹ = 55625729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55627787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13374 + ... + 17032.

It is an arithmetic number, because the mean of its divisors is an integer number (7268760).

Almost surely, 2^55627777 is an apocalyptic number.

It is an amenable number.

55627777 is a deficient number, since it is larger than the sum of its proper divisors (2522303).

55627777 is a wasteful number, since it uses less digits than its factorization.

55627777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4343.

The product of its digits is 720300, while the sum is 46.

The square root of 55627777 is about 7458.4031132676. The cubic root of 55627777 is about 381.7366884192.

The spelling of 55627777 in words is "fifty-five million, six hundred twenty-seven thousand, seven hundred seventy-seven".