29811157 has 2 divisors, whose sum is σ = 29811158. Its totient is φ = 29811156.

The previous prime is 29811139. The next prime is 29811161. The reversal of 29811157 is 75111892.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15928081 + 13883076 = 3991^2 + 3726^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29811157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29811137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14905578 + 14905579.

It is an arithmetic number, because the mean of its divisors is an integer number (14905579).

Almost surely, 2^29811157 is an apocalyptic number.

It is an amenable number.

29811157 is a deficient number, since it is larger than the sum of its proper divisors (1).

29811157 is an equidigital number, since it uses as much as digits as its factorization.

29811157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 34.

The square root of 29811157 is about 5459.9594320837. The cubic root of 29811157 is about 310.0699009904.

The spelling of 29811157 in words is "twenty-nine million, eight hundred eleven thousand, one hundred fifty-seven".