101161549 has 4 divisors (see below), whose sum is σ = 101782336. Its totient is φ = 100540764.

The previous prime is 101161523. The next prime is 101161561. The reversal of 101161549 is 945161101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 945161101 = 461 ⋅2050241.

It is a cyclic number.

It is not a de Polignac number, because 101161549 - 2⁵ = 101161517 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 (101161579) 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, 310149 + ... + 310474.

It is an arithmetic number, because the mean of its divisors is an integer number (25445584).

Almost surely, 2^101161549 is an apocalyptic number.

It is an amenable number.

101161549 is a deficient number, since it is larger than the sum of its proper divisors (620787).

101161549 is an equidigital number, since it uses as much as digits as its factorization.

101161549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620786.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 101161549 is about 10057.9097729101. The cubic root of 101161549 is about 465.9491139706.

The spelling of 101161549 in words is "one hundred one million, one hundred sixty-one thousand, five hundred forty-nine".