100455551 has 4 divisors (see below), whose sum is σ = 114806352. Its totient is φ = 86104752.

The previous prime is 100455547. The next prime is 100455569. The reversal of 100455551 is 155554001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155554001 = 31 ⋅5017871.

It is a cyclic number.

It is not a de Polignac number, because 100455551 - 2² = 100455547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100455551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100455541) 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 3 ways as a sum of consecutive naturals, for example, 7175390 + ... + 7175403.

It is an arithmetic number, because the mean of its divisors is an integer number (28701588).

Almost surely, 2^100455551 is an apocalyptic number.

100455551 is a deficient number, since it is larger than the sum of its proper divisors (14350801).

100455551 is an equidigital number, since it uses as much as digits as its factorization.

100455551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14350800.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 100455551 is about 10022.7516680800. The cubic root of 100455551 is about 464.8626425915.

The spelling of 100455551 in words is "one hundred million, four hundred fifty-five thousand, five hundred fifty-one".