100553791 has 8 divisors (see below), whose sum is σ = 108662400. Its totient is φ = 92498592.

The previous prime is 100553779. The next prime is 100553809. The reversal of 100553791 is 197355001.

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 100553791 - 2¹⁷ = 100422719 is a prime.

It is a super-2 number, since 2×100553791² = 20222129768943362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100553711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9391 + ... + 17008.

It is an arithmetic number, because the mean of its divisors is an integer number (13582800).

Almost surely, 2^100553791 is an apocalyptic number.

100553791 is a deficient number, since it is larger than the sum of its proper divisors (8108609).

100553791 is a wasteful number, since it uses less digits than its factorization.

100553791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26705.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 100553791 is about 10027.6513202245. The cubic root of 100553791 is about 465.0141299133.

The spelling of 100553791 in words is "one hundred million, five hundred fifty-three thousand, seven hundred ninety-one".