101663855 has 4 divisors (see below), whose sum is σ = 121996632. Its totient is φ = 81331080.

The previous prime is 101663843. The next prime is 101663897. The reversal of 101663855 is 558366101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 558366101 = 23 ⋅24276787.

It is not a de Polignac number, because 101663855 - 2⁴ = 101663839 is a prime.

It is a super-2 number, since 2×101663855² = 20671078826922050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10166381 + ... + 10166390.

It is an arithmetic number, because the mean of its divisors is an integer number (30499158).

Almost surely, 2^101663855 is an apocalyptic number.

101663855 is a deficient number, since it is larger than the sum of its proper divisors (20332777).

101663855 is an equidigital number, since it uses as much as digits as its factorization.

101663855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20332776.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 101663855 is about 10082.8495476229. The cubic root of 101663855 is about 466.7190465582.

The spelling of 101663855 in words is "one hundred one million, six hundred sixty-three thousand, eight hundred fifty-five".