163555454 has 4 divisors (see below), whose sum is σ = 245333184. Its totient is φ = 81777726.

The previous prime is 163555433. The next prime is 163555471. The reversal of 163555454 is 454555361.

163555454 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×163555454² = 53500773066292232, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40888862 + ... + 40888865.

It is an arithmetic number, because the mean of its divisors is an integer number (61333296).

Almost surely, 2^163555454 is an apocalyptic number.

163555454 is a deficient number, since it is larger than the sum of its proper divisors (81777730).

163555454 is an equidigital number, since it uses as much as digits as its factorization.

163555454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81777729.

The product of its digits is 180000, while the sum is 38.

The square root of 163555454 is about 12788.8800917047. The cubic root of 163555454 is about 546.8753441043.

The spelling of 163555454 in words is "one hundred sixty-three million, five hundred fifty-five thousand, four hundred fifty-four".