100320455 has 16 divisors (see below), whose sum is σ = 122563584. Its totient is φ = 78817440.

The previous prime is 100320427. The next prime is 100320463. The reversal of 100320455 is 554023001.

It is not a de Polignac number, because 100320455 - 2⁶ = 100320391 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 15 ways as a sum of consecutive naturals, for example, 66722 + ... + 68208.

It is an arithmetic number, because the mean of its divisors is an integer number (7660224).

Almost surely, 2^100320455 is an apocalyptic number.

100320455 is a deficient number, since it is larger than the sum of its proper divisors (22243129).

100320455 is a wasteful number, since it uses less digits than its factorization.

100320455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 100320455 is about 10016.0099341005. The cubic root of 100320455 is about 464.6541614728.

Adding to 100320455 its reverse (554023001), we get a palindrome (654343456).

The spelling of 100320455 in words is "one hundred million, three hundred twenty thousand, four hundred fifty-five".