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55094081 = 721124369
BaseRepresentation
bin1101001000101…
…0101101000001
310211200001212112
43102022231001
5103101002311
65244505105
71236202100
oct322125501
9124601775
1055094081
112910aaa9
121654b195
13b54cc63
147462037
154c8428b
hex348ab41

55094081 has 6 divisors (see below), whose sum is σ = 64089090. Its totient is φ = 47223456.

The previous prime is 55094069. The next prime is 55094087. The reversal of 55094081 is 18049055.

It can be written as a sum of positive squares in only one way, i.e., 47831056 + 7263025 = 6916^2 + 2695^2 .

It is not a de Polignac number, because 55094081 - 222 = 50899777 is a prime.

It is a super-2 number, since 2×550940812 = 6070715522469122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55094087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 562136 + ... + 562233.

It is an arithmetic number, because the mean of its divisors is an integer number (10681515).

Almost surely, 255094081 is an apocalyptic number.

It is an amenable number.

55094081 is a deficient number, since it is larger than the sum of its proper divisors (8995009).

55094081 is a wasteful number, since it uses less digits than its factorization.

55094081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124383 (or 1124376 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 55094081 is about 7422.5387166387. The cubic root of 55094081 is about 380.5119622938.

The spelling of 55094081 in words is "fifty-five million, ninety-four thousand, eighty-one".

Divisors: 1 7 49 1124369 7870583 55094081