101615161 has 4 divisors (see below), whose sum is σ = 102131172. Its totient is φ = 101099152.

The previous prime is 101615131. The next prime is 101615201. The reversal of 101615161 is 161516101.

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 100701225 + 913936 = 10035^2 + 956^2 .

It is a cyclic number.

It is not a de Polignac number, because 101615161 - 2¹³ = 101606969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101615131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257710 + ... + 258103.

It is an arithmetic number, because the mean of its divisors is an integer number (25532793).

Almost surely, 2^101615161 is an apocalyptic number.

It is an amenable number.

101615161 is a deficient number, since it is larger than the sum of its proper divisors (516011).

101615161 is an equidigital number, since it uses as much as digits as its factorization.

101615161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516010.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 101615161 is about 10080.4345640453. The cubic root of 101615161 is about 466.6445197540.

The spelling of 101615161 in words is "one hundred one million, six hundred fifteen thousand, one hundred sixty-one".