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75214331 = 1937310613
BaseRepresentation
bin1000111101110…
…10110111111011
312020112021122222
410132322313323
5123223324311
611244034255
71602211523
oct436726773
9166467588
1075214331
1139502705
122123298b
131277602a
149dbc683
15690aadb
hex47badfb

75214331 has 8 divisors (see below), whose sum is σ = 79392720. Its totient is φ = 71057952.

The previous prime is 75214319. The next prime is 75214333. The reversal of 75214331 is 13341257.

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 75214331 - 218 = 74952187 is a prime.

It is a super-2 number, since 2×752143312 = 11314391175555122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75214331.

It is not an unprimeable number, because it can be changed into a prime (75214333) 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, 1781 + ... + 12393.

It is an arithmetic number, because the mean of its divisors is an integer number (9924090).

Almost surely, 275214331 is an apocalyptic number.

75214331 is a deficient number, since it is larger than the sum of its proper divisors (4178389).

75214331 is a wasteful number, since it uses less digits than its factorization.

75214331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11005.

The product of its digits is 2520, while the sum is 26.

The square root of 75214331 is about 8672.6196157793. The cubic root of 75214331 is about 422.1176700677.

Adding to 75214331 its reverse (13341257), we get a palindrome (88555588).

The spelling of 75214331 in words is "seventy-five million, two hundred fourteen thousand, three hundred thirty-one".

Divisors: 1 19 373 7087 10613 201647 3958649 75214331