29121953 has 8 divisors (see below), whose sum is σ = 33526272. Its totient is φ = 24778656.

The previous prime is 29121947. The next prime is 29121959. The reversal of 29121953 is 35912192.

It is an interprime number because it is at equal distance from previous prime (29121947) and next prime (29121959).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 29121953 - 2²⁰ = 28073377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (29121959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14225 + ... + 16142.

It is an arithmetic number, because the mean of its divisors is an integer number (4190784).

Almost surely, 2^29121953 is an apocalyptic number.

It is an amenable number.

29121953 is a deficient number, since it is larger than the sum of its proper divisors (4404319).

29121953 is a wasteful number, since it uses less digits than its factorization.

29121953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30511.

The product of its digits is 4860, while the sum is 32.

The square root of 29121953 is about 5396.4759797483. The cubic root of 29121953 is about 307.6617449467.

The spelling of 29121953 in words is "twenty-nine million, one hundred twenty-one thousand, nine hundred fifty-three".