29855117 has 2 divisors, whose sum is σ = 29855118. Its totient is φ = 29855116.

The previous prime is 29855101. The next prime is 29855131. The reversal of 29855117 is 71155892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18369796 + 11485321 = 4286^2 + 3389^2 .

It is a cyclic number.

It is not a de Polignac number, because 29855117 - 2⁴ = 29855101 is a prime.

It is a super-2 number, since 2×29855117² = 1782656022167378, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29854117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14927558 + 14927559.

It is an arithmetic number, because the mean of its divisors is an integer number (14927559).

Almost surely, 2^29855117 is an apocalyptic number.

It is an amenable number.

29855117 is a deficient number, since it is larger than the sum of its proper divisors (1).

29855117 is an equidigital number, since it uses as much as digits as its factorization.

29855117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 38.

The square root of 29855117 is about 5463.9836200340. The cubic root of 29855117 is about 310.2222374499. Note that the first 4 decimals are identical.

The spelling of 29855117 in words is "twenty-nine million, eight hundred fifty-five thousand, one hundred seventeen".