29451971 has 2 divisors, whose sum is σ = 29451972. Its totient is φ = 29451970.

The previous prime is 29451913. The next prime is 29451977. The reversal of 29451971 is 17915492.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29451971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (29451977) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14725985 + 14725986.

It is an arithmetic number, because the mean of its divisors is an integer number (14725986).

Almost surely, 2^29451971 is an apocalyptic number.

29451971 is a deficient number, since it is larger than the sum of its proper divisors (1).

29451971 is an equidigital number, since it uses as much as digits as its factorization.

29451971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 38.

The square root of 29451971 is about 5426.9670166678. The cubic root of 29451971 is about 308.8195516080.

The spelling of 29451971 in words is "twenty-nine million, four hundred fifty-one thousand, nine hundred seventy-one".