100405051 has 8 divisors (see below), whose sum is σ = 105237504. Its totient is φ = 95611560.

The previous prime is 100405049. The next prime is 100405069. The reversal of 100405051 is 150504001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100405051 - 2¹ = 100405049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100405031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4395 + ... + 14836.

It is an arithmetic number, because the mean of its divisors is an integer number (13154688).

Almost surely, 2^100405051 is an apocalyptic number.

100405051 is a deficient number, since it is larger than the sum of its proper divisors (4832453).

100405051 is a wasteful number, since it uses less digits than its factorization.

100405051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19481.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 100405051 is about 10020.2320831406. The cubic root of 100405051 is about 464.7847325171.

Adding to 100405051 its reverse (150504001), we get a palindrome (250909052).

The spelling of 100405051 in words is "one hundred million, four hundred five thousand, fifty-one".