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75137105 = 515027421
BaseRepresentation
bin1000111101010…
…00000001010001
312020101100201202
410132220001101
5123213341410
611242240545
71601440421
oct436500121
9166340652
1075137105
113945a68a
12211b6155
1312749b34
149d9c481
1568e2ca5
hex47a8051

75137105 has 4 divisors (see below), whose sum is σ = 90164532. Its totient is φ = 60109680.

The previous prime is 75137089. The next prime is 75137107. The reversal of 75137105 is 50173157.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50173157 = 379132383.

It can be written as a sum of positive squares in 2 ways, for example, as 33779344 + 41357761 = 5812^2 + 6431^2 .

It is not a de Polignac number, because 75137105 - 24 = 75137089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75137107) 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, 7513706 + ... + 7513715.

It is an arithmetic number, because the mean of its divisors is an integer number (22541133).

Almost surely, 275137105 is an apocalyptic number.

It is an amenable number.

75137105 is a deficient number, since it is larger than the sum of its proper divisors (15027427).

75137105 is a wasteful number, since it uses less digits than its factorization.

75137105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15027426.

The product of its (nonzero) digits is 3675, while the sum is 29.

The square root of 75137105 is about 8668.1661843783. The cubic root of 75137105 is about 421.9731514106.

The spelling of 75137105 in words is "seventy-five million, one hundred thirty-seven thousand, one hundred five".

Divisors: 1 5 15027421 75137105