29717157 has 4 divisors (see below), whose sum is σ = 39622880. Its totient is φ = 19811436.

The previous prime is 29717147. The next prime is 29717201. The reversal of 29717157 is 75171792.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 29717157 - 2¹⁹ = 29192869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29717137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4952857 + ... + 4952862.

It is an arithmetic number, because the mean of its divisors is an integer number (9905720).

Almost surely, 2^29717157 is an apocalyptic number.

It is an amenable number.

29717157 is a deficient number, since it is larger than the sum of its proper divisors (9905723).

29717157 is an equidigital number, since it uses as much as digits as its factorization.

29717157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9905722.

The product of its digits is 30870, while the sum is 39.

The square root of 29717157 is about 5451.3445130536. The cubic root of 29717157 is about 309.7436555819.

The spelling of 29717157 in words is "twenty-nine million, seven hundred seventeen thousand, one hundred fifty-seven".