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55055910 = 23572134367
BaseRepresentation
bin1101001000000…
…1011000100110
310211121010111210
43102001120212
5103043242120
65244012250
71235652600
oct322013046
9124533453
1055055910
1129094358
1216531086
13b538780
147452170
154c77ce0
hex3481626

55055910 has 192 divisors, whose sum is σ = 171908352. Its totient is φ = 11176704.

The previous prime is 55055893. The next prime is 55055921. The reversal of 55055910 is 1955055.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 821697 + ... + 821763.

It is an arithmetic number, because the mean of its divisors is an integer number (895356).

Almost surely, 255055910 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55055910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85954176).

55055910 is an abundant number, since it is smaller than the sum of its proper divisors (116852442).

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

55055910 is a wasteful number, since it uses less digits than its factorization.

55055910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 30.

The square root of 55055910 is about 7419.9669810586. The cubic root of 55055910 is about 380.4240649039.

The spelling of 55055910 in words is "fifty-five million, fifty-five thousand, nine hundred ten".