29315161 has 4 divisors (see below), whose sum is σ = 29326500. Its totient is φ = 29303824.

The previous prime is 29315141. The next prime is 29315173. The reversal of 29315161 is 16151392.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 17065161 + 12250000 = 4131^2 + 3500^2 .

It is a cyclic number.

It is not a de Polignac number, because 29315161 - 2²³ = 20926553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29315101) 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, 315 + ... + 7663.

It is an arithmetic number, because the mean of its divisors is an integer number (7331625).

Almost surely, 2^29315161 is an apocalyptic number.

It is an amenable number.

29315161 is a deficient number, since it is larger than the sum of its proper divisors (11339).

29315161 is an equidigital number, since it uses as much as digits as its factorization.

29315161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11338.

The product of its digits is 1620, while the sum is 28.

The square root of 29315161 is about 5414.3476984767. The cubic root of 29315161 is about 308.3406341263.

The spelling of 29315161 in words is "twenty-nine million, three hundred fifteen thousand, one hundred sixty-one".