17121049 has 16 divisors (see below), whose sum is σ = 19491840. Its totient is φ = 14896000.

The previous prime is 17121017. The next prime is 17121059. The reversal of 17121049 is 94012171.

It is a cyclic number.

It is not a de Polignac number, because 17121049 - 2⁵ = 17121017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17121059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60789 + ... + 61069.

It is an arithmetic number, because the mean of its divisors is an integer number (1218240).

Almost surely, 2^17121049 is an apocalyptic number.

It is an amenable number.

17121049 is a deficient number, since it is larger than the sum of its proper divisors (2370791).

17121049 is a wasteful number, since it uses less digits than its factorization.

17121049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 17121049 is about 4137.7589344958. The cubic root of 17121049 is about 257.7370124314.

The spelling of 17121049 in words is "seventeen million, one hundred twenty-one thousand, forty-nine".