163245251 has 8 divisors (see below), whose sum is σ = 176455104. Its totient is φ = 150128640.

The previous prime is 163245233. The next prime is 163245253. The reversal of 163245251 is 152542361.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163245251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163245253) 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, 19646 + ... + 26691.

It is an arithmetic number, because the mean of its divisors is an integer number (22056888).

Almost surely, 2^163245251 is an apocalyptic number.

163245251 is a deficient number, since it is larger than the sum of its proper divisors (13209853).

163245251 is a wasteful number, since it uses less digits than its factorization.

163245251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46621.

The product of its digits is 7200, while the sum is 29.

The square root of 163245251 is about 12776.7464950980. The cubic root of 163245251 is about 546.5293865497.

The spelling of 163245251 in words is "one hundred sixty-three million, two hundred forty-five thousand, two hundred fifty-one".