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BaseRepresentation
bin1101010100111…
…1111001011110
310220012002211200
43111033321132
5103302324130
65314100330
71246104660
oct325177136
9126162750
1055901790
112961192a
121687a6a6
13b7737a9
1475d2530
154d93760
hex354fe5e

55901790 has 96 divisors (see below), whose sum is σ = 168143040. Its totient is φ = 12621312.

The previous prime is 55901719. The next prime is 55901801. The reversal of 55901790 is 9710955.

It is a happy number.

55901790 is a `hidden beast` number, since 559 + 0 + 17 + 90 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55572 + ... + 56568.

It is an arithmetic number, because the mean of its divisors is an integer number (1751490).

Almost surely, 255901790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55901790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84071520).

55901790 is an abundant number, since it is smaller than the sum of its proper divisors (112241250).

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

55901790 is a wasteful number, since it uses less digits than its factorization.

55901790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106 (or 1103 counting only the distinct ones).

The product of its (nonzero) digits is 14175, while the sum is 36.

The square root of 55901790 is about 7476.7499623834. The cubic root of 55901790 is about 382.3624521454.

The spelling of 55901790 in words is "fifty-five million, nine hundred one thousand, seven hundred ninety".