163133501 has 4 divisors (see below), whose sum is σ = 168395904. Its totient is φ = 157871100.

The previous prime is 163133491. The next prime is 163133507. The reversal of 163133501 is 105331361.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-163133501 is a prime.

It is a super-2 number, since 2×163133501² = 53225078297034002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163133507) 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, 2631155 + ... + 2631216.

It is an arithmetic number, because the mean of its divisors is an integer number (42098976).

Almost surely, 2^163133501 is an apocalyptic number.

It is an amenable number.

163133501 is a deficient number, since it is larger than the sum of its proper divisors (5262403).

163133501 is an equidigital number, since it uses as much as digits as its factorization.

163133501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5262402.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 163133501 is about 12772.3725673815. The cubic root of 163133501 is about 546.4046486678.

Adding to 163133501 its reverse (105331361), we get a palindrome (268464862).

The spelling of 163133501 in words is "one hundred sixty-three million, one hundred thirty-three thousand, five hundred one".