100400451 has 8 divisors (see below), whose sum is σ = 139687680. Its totient is φ = 64023432.

The previous prime is 100400437. The next prime is 100400473. The reversal of 100400451 is 154004001.

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

It is not a de Polignac number, because 100400451 - 2⁷ = 100400323 is a prime.

It is a super-2 number, since 2×100400451² = 20160501122006802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100400451.

It is not an unprimeable number, because it can be changed into a prime (100400491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 727471 + ... + 727608.

It is an arithmetic number, because the mean of its divisors is an integer number (17460960).

Almost surely, 2^100400451 is an apocalyptic number.

100400451 is a deficient number, since it is larger than the sum of its proper divisors (39287229).

100400451 is a wasteful number, since it uses less digits than its factorization.

100400451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455105.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 100400451 is about 10020.0025449099. The cubic root of 100400451 is about 464.7776344598. Note that the first 3 decimals are identical.

Adding to 100400451 its reverse (154004001), we get a palindrome (254404452).

The spelling of 100400451 in words is "one hundred million, four hundred thousand, four hundred fifty-one".