100172077 has 4 divisors (see below), whose sum is σ = 100193056. Its totient is φ = 100151100.

The previous prime is 100172063. The next prime is 100172089. The reversal of 100172077 is 770271001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100172077 - 2⁷ = 100171949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100172477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538 + ... + 14164.

It is an arithmetic number, because the mean of its divisors is an integer number (25048264).

Almost surely, 2^100172077 is an apocalyptic number.

It is an amenable number.

100172077 is a deficient number, since it is larger than the sum of its proper divisors (20979).

100172077 is an equidigital number, since it uses as much as digits as its factorization.

100172077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20978.

The product of its (nonzero) digits is 686, while the sum is 25.

The square root of 100172077 is about 10008.6001518694. The cubic root of 100172077 is about 464.4249676902.

The spelling of 100172077 in words is "one hundred million, one hundred seventy-two thousand, seventy-seven".