101880557 has 4 divisors (see below), whose sum is σ = 101964156. Its totient is φ = 101796960.

The previous prime is 101880529. The next prime is 101880577. The reversal of 101880557 is 755088101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67996516 + 33884041 = 8246^2 + 5821^2 .

It is a cyclic number.

It is not a de Polignac number, because 101880557 - 2¹⁴ = 101864173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101880577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39944 + ... + 42417.

It is an arithmetic number, because the mean of its divisors is an integer number (25491039).

Almost surely, 2^101880557 is an apocalyptic number.

It is an amenable number.

101880557 is a deficient number, since it is larger than the sum of its proper divisors (83599).

101880557 is an equidigital number, since it uses as much as digits as its factorization.

101880557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83598.

The product of its (nonzero) digits is 11200, while the sum is 35.

The square root of 101880557 is about 10093.5898965631. The cubic root of 101880557 is about 467.0504235087.

The spelling of 101880557 in words is "one hundred one million, eight hundred eighty thousand, five hundred fifty-seven".