29472257 has 2 divisors, whose sum is σ = 29472258. Its totient is φ = 29472256.

The previous prime is 29472253. The next prime is 29472259. The reversal of 29472257 is 75227492.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28633201 + 839056 = 5351^2 + 916^2 .

It is a cyclic number.

It is not a de Polignac number, because 29472257 - 2² = 29472253 is a prime.

It is a super-2 number, since 2×29472257² = 1737227865348098, which contains 22 as substring.

Together with 29472259, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29472257.

It is not a weakly prime, because it can be changed into another prime (29472251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14736128 + 14736129.

It is an arithmetic number, because the mean of its divisors is an integer number (14736129).

Almost surely, 2^29472257 is an apocalyptic number.

It is an amenable number.

29472257 is a deficient number, since it is larger than the sum of its proper divisors (1).

29472257 is an equidigital number, since it uses as much as digits as its factorization.

29472257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 38.

The square root of 29472257 is about 5428.8356946955. The cubic root of 29472257 is about 308.8904384951.

The spelling of 29472257 in words is "twenty-nine million, four hundred seventy-two thousand, two hundred fifty-seven".