101875409 has 2 divisors, whose sum is σ = 101875410. Its totient is φ = 101875408.

The previous prime is 101875399. The next prime is 101875451. The reversal of 101875409 is 904578101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73017025 + 28858384 = 8545^2 + 5372^2 .

It is a cyclic number.

It is not a de Polignac number, because 101875409 - 2⁸ = 101875153 is a prime.

It is not a weakly prime, because it can be changed into another prime (101875909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50937704 + 50937705.

It is an arithmetic number, because the mean of its divisors is an integer number (50937705).

Almost surely, 2^101875409 is an apocalyptic number.

It is an amenable number.

101875409 is a deficient number, since it is larger than the sum of its proper divisors (1).

101875409 is an equidigital number, since it uses as much as digits as its factorization.

101875409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 101875409 is about 10093.3348800087. The cubic root of 101875409 is about 467.0425567278.

The spelling of 101875409 in words is "one hundred one million, eight hundred seventy-five thousand, four hundred nine".