100545971 has 4 divisors (see below), whose sum is σ = 102250200. Its totient is φ = 98841744.

The previous prime is 100545961. The next prime is 100545979. The reversal of 100545971 is 179545001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 179545001 = 6271 ⋅28631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100545971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100545979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 852026 + ... + 852143.

It is an arithmetic number, because the mean of its divisors is an integer number (25562550).

Almost surely, 2^100545971 is an apocalyptic number.

100545971 is a deficient number, since it is larger than the sum of its proper divisors (1704229).

100545971 is an equidigital number, since it uses as much as digits as its factorization.

100545971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704228.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 100545971 is about 10027.2613908285. The cubic root of 100545971 is about 465.0020749898.

The spelling of 100545971 in words is "one hundred million, five hundred forty-five thousand, nine hundred seventy-one".