29478161 has 2 divisors, whose sum is σ = 29478162. Its totient is φ = 29478160.

The previous prime is 29478149. The next prime is 29478173. The reversal of 29478161 is 16187492.

It is a balanced prime because it is at equal distance from previous prime (29478149) and next prime (29478173).

It can be written as a sum of positive squares in only one way, i.e., 29376400 + 101761 = 5420^2 + 319^2 .

It is a cyclic number.

It is not a de Polignac number, because 29478161 - 2¹⁴ = 29461777 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (29478131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14739080 + 14739081.

It is an arithmetic number, because the mean of its divisors is an integer number (14739081).

Almost surely, 2^29478161 is an apocalyptic number.

It is an amenable number.

29478161 is a deficient number, since it is larger than the sum of its proper divisors (1).

29478161 is an equidigital number, since it uses as much as digits as its factorization.

29478161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 29478161 is about 5429.3794304690. The cubic root of 29478161 is about 308.9110631726.

The spelling of 29478161 in words is "twenty-nine million, four hundred seventy-eight thousand, one hundred sixty-one".