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75481141 = 197383153
BaseRepresentation
bin1000111111111…
…00000000110101
312021000211122211
410133330000311
5123310344031
611253453421
71604402431
oct437740065
9167024584
1075481141
113967510a
1221341271
131283a5c8
14a04b9c1
15695ebb1
hex47fc035

75481141 has 4 divisors (see below), whose sum is σ = 75864492. Its totient is φ = 75097792.

The previous prime is 75481121. The next prime is 75481183. The reversal of 75481141 is 14118457.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63266116 + 12215025 = 7954^2 + 3495^2 .

It is a cyclic number.

It is not a de Polignac number, because 75481141 - 213 = 75472949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75481121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191380 + ... + 191773.

It is an arithmetic number, because the mean of its divisors is an integer number (18966123).

Almost surely, 275481141 is an apocalyptic number.

It is an amenable number.

75481141 is a deficient number, since it is larger than the sum of its proper divisors (383351).

75481141 is a wasteful number, since it uses less digits than its factorization.

75481141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383350.

The product of its digits is 4480, while the sum is 31.

The square root of 75481141 is about 8687.9883172113. The cubic root of 75481141 is about 422.6162111612.

Adding to 75481141 its reverse (14118457), we get a palindrome (89599598).

The spelling of 75481141 in words is "seventy-five million, four hundred eighty-one thousand, one hundred forty-one".

Divisors: 1 197 383153 75481141