29135521 has 2 divisors, whose sum is σ = 29135522. Its totient is φ = 29135520.

The previous prime is 29135497. The next prime is 29135537. The reversal of 29135521 is 12553192.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24117921 + 5017600 = 4911^2 + 2240^2 .

It is a cyclic number.

It is not a de Polignac number, because 29135521 - 2²¹ = 27038369 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29135521.

It is not a weakly prime, because it can be changed into another prime (29135621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14567760 + 14567761.

It is an arithmetic number, because the mean of its divisors is an integer number (14567761).

Almost surely, 2^29135521 is an apocalyptic number.

It is an amenable number.

29135521 is a deficient number, since it is larger than the sum of its proper divisors (1).

29135521 is an equidigital number, since it uses as much as digits as its factorization.

29135521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 28.

The square root of 29135521 is about 5397.7329500449. The cubic root of 29135521 is about 307.7095176864.

The spelling of 29135521 in words is "twenty-nine million, one hundred thirty-five thousand, five hundred twenty-one".