194252257 has 8 divisors (see below), whose sum is σ = 210003200. Its totient is φ = 179054064.

The previous prime is 194252221. The next prime is 194252263. The reversal of 194252257 is 752252491.

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 194252257 - 2¹¹ = 194250209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (194252657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137457 + ... + 138862.

It is an arithmetic number, because the mean of its divisors is an integer number (26250400).

Almost surely, 2^194252257 is an apocalyptic number.

It is an amenable number.

194252257 is a deficient number, since it is larger than the sum of its proper divisors (15750943).

194252257 is a wasteful number, since it uses less digits than its factorization.

194252257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276375.

The product of its digits is 50400, while the sum is 37.

The square root of 194252257 is about 13937.4408339551. The cubic root of 194252257 is about 579.1468401772.

The spelling of 194252257 in words is "one hundred ninety-four million, two hundred fifty-two thousand, two hundred fifty-seven".