29553421 has 2 divisors, whose sum is σ = 29553422. Its totient is φ = 29553420.

The previous prime is 29553389. The next prime is 29553431. The reversal of 29553421 is 12435592.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27562500 + 1990921 = 5250^2 + 1411^2 .

It is a cyclic number.

It is not a de Polignac number, because 29553421 - 2⁵ = 29553389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29553431) 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 as a sum of consecutive naturals, namely, 14776710 + 14776711.

It is an arithmetic number, because the mean of its divisors is an integer number (14776711).

Almost surely, 2^29553421 is an apocalyptic number.

It is an amenable number.

29553421 is a deficient number, since it is larger than the sum of its proper divisors (1).

29553421 is an equidigital number, since it uses as much as digits as its factorization.

29553421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 31.

The square root of 29553421 is about 5436.3058228911. The cubic root of 29553421 is about 309.1737309539.

The spelling of 29553421 in words is "twenty-nine million, five hundred fifty-three thousand, four hundred twenty-one".