55745500 has 24 divisors (see below), whose sum is σ = 121749264. Its totient is φ = 22298000.

The previous prime is 55745489. The next prime is 55745509. The reversal of 55745500 is 554755.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55745509) 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, 55246 + ... + 56245.

It is an arithmetic number, because the mean of its divisors is an integer number (5072886).

Almost surely, 2^55745500 is an apocalyptic number.

55745500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55745500 is an abundant number, since it is smaller than the sum of its proper divisors (66003764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55745500 is a wasteful number, since it uses less digits than its factorization.

55745500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111510 (or 111498 counting only the distinct ones).

The product of its (nonzero) digits is 17500, while the sum is 31.

The square root of 55745500 is about 7466.2909131643. The cubic root of 55745500 is about 382.0057837451.

The spelling of 55745500 in words is "fifty-five million, seven hundred forty-five thousand, five hundred".