29144561 has 2 divisors, whose sum is σ = 29144562. Its totient is φ = 29144560.

The previous prime is 29144551. The next prime is 29144587. The reversal of 29144561 is 16544192.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26061025 + 3083536 = 5105^2 + 1756^2 .

It is a cyclic number.

It is not a de Polignac number, because 29144561 - 2¹⁸ = 28882417 is a prime.

It is not a weakly prime, because it can be changed into another prime (29144551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14572280 + 14572281.

It is an arithmetic number, because the mean of its divisors is an integer number (14572281).

Almost surely, 2^29144561 is an apocalyptic number.

It is an amenable number.

29144561 is a deficient number, since it is larger than the sum of its proper divisors (1).

29144561 is an equidigital number, since it uses as much as digits as its factorization.

29144561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 29144561 is about 5398.5702736928. The cubic root of 29144561 is about 307.7413391687.

The spelling of 29144561 in words is "twenty-nine million, one hundred forty-four thousand, five hundred sixty-one".