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75163213 = 671121839
BaseRepresentation
bin1000111101011…
…10011001001101
312020102200112201
410132232121031
5123220210323
611243001501
71601606506
oct436563115
9166380481
1075163213
1139478264
1221209291
1312758998
149da7bad
1568ea8ad
hex47ae64d

75163213 has 4 divisors (see below), whose sum is σ = 76285120. Its totient is φ = 74041308.

The previous prime is 75163211. The next prime is 75163219. The reversal of 75163213 is 31236157.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 75163213 - 21 = 75163211 is a prime.

It is a super-3 number, since 3×751632133 (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75163211) 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, 560853 + ... + 560986.

It is an arithmetic number, because the mean of its divisors is an integer number (19071280).

Almost surely, 275163213 is an apocalyptic number.

It is an amenable number.

75163213 is a deficient number, since it is larger than the sum of its proper divisors (1121907).

75163213 is a wasteful number, since it uses less digits than its factorization.

75163213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121906.

The product of its digits is 3780, while the sum is 28.

The square root of 75163213 is about 8669.6720237850. The cubic root of 75163213 is about 422.0220202940.

The spelling of 75163213 in words is "seventy-five million, one hundred sixty-three thousand, two hundred thirteen".

Divisors: 1 67 1121839 75163213