190521317 has 8 divisors (see below), whose sum is σ = 217835712. Its totient is φ = 163231200.

The previous prime is 190521269. The next prime is 190521337. The reversal of 190521317 is 713125091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 190521317 - 2¹⁴ = 190504933 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 190521317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190521337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16217 + ... + 25377.

It is an arithmetic number, because the mean of its divisors is an integer number (27229464).

Almost surely, 2^190521317 is an apocalyptic number.

It is an amenable number.

190521317 is a deficient number, since it is larger than the sum of its proper divisors (27314395).

190521317 is an equidigital number, since it uses as much as digits as its factorization.

190521317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12139.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 190521317 is about 13802.9459536724. The cubic root of 190521317 is about 575.4150168280.

The spelling of 190521317 in words is "one hundred ninety million, five hundred twenty-one thousand, three hundred seventeen".