29121137 has 2 divisors, whose sum is σ = 29121138. Its totient is φ = 29121136.

The previous prime is 29121101. The next prime is 29121143. The reversal of 29121137 is 73112192.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28344976 + 776161 = 5324^2 + 881^2 .

It is a cyclic number.

It is not a de Polignac number, because 29121137 - 2¹² = 29117041 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (29120137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14560568 + 14560569.

It is an arithmetic number, because the mean of its divisors is an integer number (14560569).

Almost surely, 2^29121137 is an apocalyptic number.

It is an amenable number.

29121137 is a deficient number, since it is larger than the sum of its proper divisors (1).

29121137 is an equidigital number, since it uses as much as digits as its factorization.

29121137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 26.

The square root of 29121137 is about 5396.4003743236. The cubic root of 29121137 is about 307.6588713490.

The spelling of 29121137 in words is "twenty-nine million, one hundred twenty-one thousand, one hundred thirty-seven".