100432445 has 4 divisors (see below), whose sum is σ = 120518940. Its totient is φ = 80345952.

The previous prime is 100432441. The next prime is 100432457. The reversal of 100432445 is 544234001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544234001 = 17027 ⋅31963.

It can be written as a sum of positive squares in 2 ways, for example, as 52504516 + 47927929 = 7246^2 + 6923^2 .

It is a cyclic number.

It is not a de Polignac number, because 100432445 - 2² = 100432441 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 100432445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100432441) 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, 10043240 + ... + 10043249.

It is an arithmetic number, because the mean of its divisors is an integer number (30129735).

Almost surely, 2^100432445 is an apocalyptic number.

It is an amenable number.

100432445 is a deficient number, since it is larger than the sum of its proper divisors (20086495).

100432445 is an equidigital number, since it uses as much as digits as its factorization.

100432445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20086494.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 100432445 is about 10021.5989243234. The cubic root of 100432445 is about 464.8269985023.

Adding to 100432445 its reverse (544234001), we get a palindrome (644666446).

The spelling of 100432445 in words is "one hundred million, four hundred thirty-two thousand, four hundred forty-five".