100874521 has 4 divisors (see below), whose sum is σ = 110044944. Its totient is φ = 91704100.

The previous prime is 100874507. The next prime is 100874531. The reversal of 100874521 is 125478001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 125478001 = 11 ⋅11407091.

It is a cyclic number.

It is not a de Polignac number, because 100874521 - 2⁹ = 100874009 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 100874521.

It is not an unprimeable number, because it can be changed into a prime (100874531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4585195 + ... + 4585216.

It is an arithmetic number, because the mean of its divisors is an integer number (27511236).

Almost surely, 2^100874521 is an apocalyptic number.

100874521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100874521 is a deficient number, since it is larger than the sum of its proper divisors (9170423).

100874521 is an equidigital number, since it uses as much as digits as its factorization.

100874521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9170422.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 100874521 is about 10043.6308673706. The cubic root of 100874521 is about 465.5080137974.

The spelling of 100874521 in words is "one hundred million, eight hundred seventy-four thousand, five hundred twenty-one".