75010013 has 4 divisors (see below), whose sum is σ = 80780028. Its totient is φ = 69240000.
The previous prime is 75009997. The next prime is 75010021. The reversal of 75010013 is 31001057.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 30946969 + 44063044 = 5563^2 + 6638^2 .
It is a cyclic number.
It is not a de Polignac number, because 75010013 - 24 = 75009997 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 75009973 and 75010000.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (75010513) 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, 2884988 + ... + 2885013.
It is an arithmetic number, because the mean of its divisors is an integer number (20195007).
Almost surely, 275010013 is an apocalyptic number.
It is an amenable number.
75010013 is a deficient number, since it is larger than the sum of its proper divisors (5770015).
75010013 is a wasteful number, since it uses less digits than its factorization.
75010013 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5770014.
The product of its (nonzero) digits is 105, while the sum is 17.
The square root of 75010013 is about 8660.8321193751. The cubic root of 75010013 is about 421.7350991297.
It can be divided in two parts, 750 and 10013, that multiplied together give a triangular number (7509750 = T3875).
The spelling of 75010013 in words is "seventy-five million, ten thousand, thirteen".
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