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75097131 = 353472309
BaseRepresentation
bin1000111100111…
…10010000101011
312020022022220020
410132132100223
5123211102011
611241331523
71601213034
oct436362053
9166268806
1075097131
113943264a
1221196ba3
1312734895
149d8ba8b
1568d6006
hex479e42b

75097131 has 8 divisors (see below), whose sum is σ = 102018960. Its totient is φ = 49120032.

The previous prime is 75097129. The next prime is 75097133. The reversal of 75097131 is 13179057.

It is an interprime number because it is at equal distance from previous prime (75097129) and next prime (75097133).

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

It is not a de Polignac number, because 75097131 - 21 = 75097129 is a prime.

It is a super-2 number, since 2×750971312 = 11279158168862322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 75097092 and 75097101.

It is not an unprimeable number, because it can be changed into a prime (75097133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235996 + ... + 236313.

It is an arithmetic number, because the mean of its divisors is an integer number (12752370).

Almost surely, 275097131 is an apocalyptic number.

75097131 is a deficient number, since it is larger than the sum of its proper divisors (26921829).

75097131 is a wasteful number, since it uses less digits than its factorization.

75097131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472365.

The product of its (nonzero) digits is 6615, while the sum is 33.

The square root of 75097131 is about 8665.8600842617. The cubic root of 75097131 is about 421.8983062460.

The spelling of 75097131 in words is "seventy-five million, ninety-seven thousand, one hundred thirty-one".

Divisors: 1 3 53 159 472309 1416927 25032377 75097131