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75431101 = 1493171597
BaseRepresentation
bin1000111111011…
…11110010111101
312020221022000111
410133233302331
5123302243401
611252430021
71604103514
oct437576275
9166838014
1075431101
1139640559
1221318311
13128208b5
14a03767b
15694ee51
hex47efcbd

75431101 has 8 divisors (see below), whose sum is σ = 76224600. Its totient is φ = 74641728.

The previous prime is 75431093. The next prime is 75431107. The reversal of 75431101 is 10113457.

It can be written as a sum of positive squares in 4 ways, for example, as 4955076 + 70476025 = 2226^2 + 8395^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75431101 - 23 = 75431093 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 (75431107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46435 + ... + 48031.

It is an arithmetic number, because the mean of its divisors is an integer number (9528075).

Almost surely, 275431101 is an apocalyptic number.

It is an amenable number.

75431101 is a deficient number, since it is larger than the sum of its proper divisors (793499).

75431101 is a wasteful number, since it uses less digits than its factorization.

75431101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 75431101 is about 8685.1080016313. The cubic root of 75431101 is about 422.5227997920.

Adding to 75431101 its reverse (10113457), we get a palindrome (85544558).

The spelling of 75431101 in words is "seventy-five million, four hundred thirty-one thousand, one hundred one".

Divisors: 1 149 317 1597 47233 237953 506249 75431101