75109897 has 2 divisors, whose sum is σ = 75109898. Its totient is φ = 75109896.

The previous prime is 75109873. The next prime is 75109933. The reversal of 75109897 is 79890157.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60279696 + 14830201 = 7764^2 + 3851^2 .

It is a cyclic number.

It is not a de Polignac number, because 75109897 - 2¹¹ = 75107849 is a prime.

It is not a weakly prime, because it can be changed into another prime (75109817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37554948 + 37554949.

It is an arithmetic number, because the mean of its divisors is an integer number (37554949).

Almost surely, 2^75109897 is an apocalyptic number.

It is an amenable number.

75109897 is a deficient number, since it is larger than the sum of its proper divisors (1).

75109897 is an equidigital number, since it uses as much as digits as its factorization.

75109897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 46.

The square root of 75109897 is about 8666.5966215118. The cubic root of 75109897 is about 421.9222115029.

The spelling of 75109897 in words is "seventy-five million, one hundred nine thousand, eight hundred ninety-seven".