29148561 has 12 divisors (see below), whose sum is σ = 45342388. Its totient is φ = 17937504.

The previous prime is 29148547. The next prime is 29148589. The reversal of 29148561 is 16584192.

29148561 is a `hidden beast` number, since 2 + 91 + 4 + 8 + 561 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15752961 + 13395600 = 3969^2 + 3660^2 .

It is not a de Polignac number, because 29148561 - 2¹⁴ = 29132177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29148461) 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 11 ways as a sum of consecutive naturals, for example, 124450 + ... + 124683.

Almost surely, 2^29148561 is an apocalyptic number.

It is an amenable number.

29148561 is a deficient number, since it is larger than the sum of its proper divisors (16193827).

29148561 is a wasteful number, since it uses less digits than its factorization.

29148561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249152 (or 249149 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 29148561 is about 5398.9407294394. The cubic root of 29148561 is about 307.7554173706.

The spelling of 29148561 in words is "twenty-nine million, one hundred forty-eight thousand, five hundred sixty-one".