Search a number
-
+
75255081 = 31112791783
BaseRepresentation
bin1000111110001…
…00110100101001
312020121100120020
410133010310221
5123231130311
611244551053
71602441366
oct437046451
9166540506
1075255081
1139530290
1221252489
131278b745
149dcd46d
156917c06
hex47c4d29

75255081 has 16 divisors (see below), whose sum is σ = 109608960. Its totient is φ = 45547920.

The previous prime is 75255041. The next prime is 75255091. The reversal of 75255081 is 18055257.

It is a happy number.

It is not a de Polignac number, because 75255081 - 214 = 75238697 is a prime.

It is a super-2 number, since 2×752550812 = 11326654432633122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (75255041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41316 + ... + 43098.

It is an arithmetic number, because the mean of its divisors is an integer number (6850560).

Almost surely, 275255081 is an apocalyptic number.

It is an amenable number.

75255081 is a deficient number, since it is larger than the sum of its proper divisors (34353879).

75255081 is a wasteful number, since it uses less digits than its factorization.

75255081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076.

The product of its (nonzero) digits is 14000, while the sum is 33.

The square root of 75255081 is about 8674.9686454765. The cubic root of 75255081 is about 422.1938886522.

The spelling of 75255081 in words is "seventy-five million, two hundred fifty-five thousand, eighty-one".

Divisors: 1 3 11 33 1279 1783 3837 5349 14069 19613 42207 58839 2280457 6841371 25085027 75255081