55577828 has 12 divisors (see below), whose sum is σ = 102982572. Its totient is φ = 26154240.

The previous prime is 55577827. The next prime is 55577857. The reversal of 55577828 is 82877555.

It can be written as a sum of positive squares in 2 ways, for example, as 23406244 + 32171584 = 4838^2 + 5672^2 .

It is not an unprimeable number, because it can be changed into a prime (55577827) 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, 408593 + ... + 408728.

It is an arithmetic number, because the mean of its divisors is an integer number (8581881).

Almost surely, 2^55577828 is an apocalyptic number.

It is an amenable number.

55577828 is a deficient number, since it is larger than the sum of its proper divisors (47404744).

55577828 is a wasteful number, since it uses less digits than its factorization.

55577828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817342 (or 817340 counting only the distinct ones).

The product of its digits is 784000, while the sum is 47.

The square root of 55577828 is about 7455.0538562776. The cubic root of 55577828 is about 381.6223985405.

The spelling of 55577828 in words is "fifty-five million, five hundred seventy-seven thousand, eight hundred twenty-eight".