100725571 has 2 divisors, whose sum is σ = 100725572. Its totient is φ = 100725570.

The previous prime is 100725529. The next prime is 100725577. The reversal of 100725571 is 175527001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100725571 - 2¹⁵ = 100692803 is a prime.

It is not a weakly prime, because it can be changed into another prime (100725577) 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 as a sum of consecutive naturals, namely, 50362785 + 50362786.

It is an arithmetic number, because the mean of its divisors is an integer number (50362786).

Almost surely, 2^100725571 is an apocalyptic number.

100725571 is a deficient number, since it is larger than the sum of its proper divisors (1).

100725571 is an equidigital number, since it uses as much as digits as its factorization.

100725571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 100725571 is about 10036.2129810004. The cubic root of 100725571 is about 465.2787799150.

The spelling of 100725571 in words is "one hundred million, seven hundred twenty-five thousand, five hundred seventy-one".