75105601 has 2 divisors, whose sum is σ = 75105602. Its totient is φ = 75105600.

The previous prime is 75105599. The next prime is 75105617. The reversal of 75105601 is 10650157.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50751376 + 24354225 = 7124^2 + 4935^2 .

It is a cyclic number.

It is not a de Polignac number, because 75105601 - 2¹ = 75105599 is a prime.

Together with 75105599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (75105631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37552800 + 37552801.

It is an arithmetic number, because the mean of its divisors is an integer number (37552801).

Almost surely, 2^75105601 is an apocalyptic number.

It is an amenable number.

75105601 is a deficient number, since it is larger than the sum of its proper divisors (1).

75105601 is an equidigital number, since it uses as much as digits as its factorization.

75105601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 75105601 is about 8666.3487698107. The cubic root of 75105601 is about 421.9141672351.

Adding to 75105601 its reverse (10650157), we get a palindrome (85755758).

The spelling of 75105601 in words is "seventy-five million, one hundred five thousand, six hundred one".