29855081 has 4 divisors (see below), whose sum is σ = 31153152. Its totient is φ = 28557012.

The previous prime is 29855069. The next prime is 29855101. The reversal of 29855081 is 18055892.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29855081 is a prime.

It is a super-2 number, since 2×29855081² = 1782651723033122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29855051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649001 + ... + 649046.

It is an arithmetic number, because the mean of its divisors is an integer number (7788288).

Almost surely, 2^29855081 is an apocalyptic number.

It is an amenable number.

29855081 is a deficient number, since it is larger than the sum of its proper divisors (1298071).

29855081 is a wasteful number, since it uses less digits than its factorization.

29855081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298070.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 29855081 is about 5463.9803257332. The cubic root of 29855081 is about 310.2221127588. Note that the first 3 decimals are identical.

The spelling of 29855081 in words is "twenty-nine million, eight hundred fifty-five thousand, eighty-one".