29056952521 has 9 divisors (see below), whose sum is σ = 29198954421. Its totient is φ = 28915640352.

The previous prime is 29056952513. The next prime is 29056952527. The reversal of 29056952521 is 12525965092.

The square root of 29056952521 is 170461.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 5556062521 + 23500890000 = 74539^2 + 153300^2 .

It is not a de Polignac number, because 29056952521 - 2³ = 29056952513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29056952527) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 63581725 + ... + 63582181.

It is an arithmetic number, because the mean of its divisors is an integer number (3244328269).

Almost surely, 2^29056952521 is an apocalyptic number.

29056952521 is the 170461-st square number.

29056952521 is the 85231-st centered octagonal number.

It is an amenable number.

29056952521 is a deficient number, since it is larger than the sum of its proper divisors (142001900).

29056952521 is an frugal number, since it uses more digits than its factorization.

29056952521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 46.

The spelling of 29056952521 in words is "twenty-nine billion, fifty-six million, nine hundred fifty-two thousand, five hundred twenty-one".