55810028 has 12 divisors (see below), whose sum is σ = 97834800. Its totient is φ = 27857232.

The previous prime is 55810021. The next prime is 55810037. The reversal of 55810028 is 82001855.

It is a super-2 number, since 2×55810028² = 6229518450721568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55810021) 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, 9251 + ... + 14042.

It is an arithmetic number, because the mean of its divisors is an integer number (8152900).

Almost surely, 2^55810028 is an apocalyptic number.

It is an amenable number.

55810028 is a deficient number, since it is larger than the sum of its proper divisors (42024772).

55810028 is a wasteful number, since it uses less digits than its factorization.

55810028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23896 (or 23894 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 55810028 is about 7470.6109522582. The cubic root of 55810028 is about 382.1531233757.

The spelling of 55810028 in words is "fifty-five million, eight hundred ten thousand, twenty-eight".