17121401 has 4 divisors (see below), whose sum is σ = 18677904. Its totient is φ = 15564900.

The previous prime is 17121389. The next prime is 17121409. The reversal of 17121401 is 10412171.

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 not a de Polignac number, because 17121401 - 2¹⁴ = 17105017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 17121401.

It is not an unprimeable number, because it can be changed into a prime (17121409) 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, 778235 + ... + 778256.

It is an arithmetic number, because the mean of its divisors is an integer number (4669476).

Almost surely, 2^17121401 is an apocalyptic number.

17121401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

17121401 is a deficient number, since it is larger than the sum of its proper divisors (1556503).

17121401 is a wasteful number, since it uses less digits than its factorization.

17121401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556502.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 17121401 is about 4137.8014693796. The cubic root of 17121401 is about 257.7387787329.

Adding to 17121401 its reverse (10412171), we get a palindrome (27533572).

It can be divided in two parts, 1712 and 1401, that added together give a palindrome (3113).

The spelling of 17121401 in words is "seventeen million, one hundred twenty-one thousand, four hundred one".