101551161 has 8 divisors (see below), whose sum is σ = 138282624. Its totient is φ = 66260240.

The previous prime is 101551159. The next prime is 101551169. The reversal of 101551161 is 161155101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101551161 - 2¹ = 101551159 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101551169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359970 + ... + 360251.

It is an arithmetic number, because the mean of its divisors is an integer number (17285328).

Almost surely, 2^101551161 is an apocalyptic number.

It is an amenable number.

101551161 is a deficient number, since it is larger than the sum of its proper divisors (36731463).

101551161 is an equidigital number, since it uses as much as digits as its factorization.

101551161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720271.

The product of its (nonzero) digits is 150, while the sum is 21.

The square root of 101551161 is about 10077.2595977279. The cubic root of 101551161 is about 466.5465306969.

The spelling of 101551161 in words is "one hundred one million, five hundred fifty-one thousand, one hundred sixty-one".