101879955 has 24 divisors (see below), whose sum is σ = 176869680. Its totient is φ = 54250560.

The previous prime is 101879951. The next prime is 101879983. The reversal of 101879955 is 559978101.

It is not a de Polignac number, because 101879955 - 2² = 101879951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 101879955.

It is not an unprimeable number, because it can be changed into a prime (101879951) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35940 + ... + 38670.

It is an arithmetic number, because the mean of its divisors is an integer number (7369570).

Almost surely, 2^101879955 is an apocalyptic number.

101879955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

101879955 is a deficient number, since it is larger than the sum of its proper divisors (74989725).

101879955 is a wasteful number, since it uses less digits than its factorization.

101879955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571 (or 3568 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 45.

The square root of 101879955 is about 10093.5600756126. The cubic root of 101879955 is about 467.0495035919.

The spelling of 101879955 in words is "one hundred one million, eight hundred seventy-nine thousand, nine hundred fifty-five".