100081775 has 6 divisors (see below), whose sum is σ = 124101432. Its totient is φ = 80065400.

The previous prime is 100081747. The next prime is 100081789. The reversal of 100081775 is 577180001.

It is not a de Polignac number, because 100081775 - 2¹⁶ = 100016239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2001611 + ... + 2001660.

It is an arithmetic number, because the mean of its divisors is an integer number (20683572).

Almost surely, 2^100081775 is an apocalyptic number.

100081775 is a deficient number, since it is larger than the sum of its proper divisors (24019657).

100081775 is an equidigital number, since it uses as much as digits as its factorization.

100081775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003281 (or 4003276 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 29.

The square root of 100081775 is about 10004.0879144478. The cubic root of 100081775 is about 464.2853708648.

The spelling of 100081775 in words is "one hundred million, eighty-one thousand, seven hundred seventy-five".