29521081 has 4 divisors (see below), whose sum is σ = 29553012. Its totient is φ = 29489152.

The previous prime is 29521073. The next prime is 29521097. The reversal of 29521081 is 18012592.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24157225 + 5363856 = 4915^2 + 2316^2 .

It is a cyclic number.

It is not a de Polignac number, because 29521081 - 2³ = 29521073 is a prime.

It is a super-2 number, since 2×29521081² = 1742988446817122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29521001) 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, 14536 + ... + 16441.

It is an arithmetic number, because the mean of its divisors is an integer number (7388253).

Almost surely, 2^29521081 is an apocalyptic number.

It is an amenable number.

29521081 is a deficient number, since it is larger than the sum of its proper divisors (31931).

29521081 is an equidigital number, since it uses as much as digits as its factorization.

29521081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31930.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 29521081 is about 5433.3305623715. The cubic root of 29521081 is about 309.0609145975.

The spelling of 29521081 in words is "twenty-nine million, five hundred twenty-one thousand, eighty-one".