161452554 has 8 divisors (see below), whose sum is σ = 322905120. Its totient is φ = 53817516.

The previous prime is 161452549. The next prime is 161452561. The reversal of 161452554 is 455254161.

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

161452554 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13454374 + ... + 13454385.

It is an arithmetic number, because the mean of its divisors is an integer number (40363140).

Almost surely, 2^161452554 is an apocalyptic number.

161452554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161452554 is a wasteful number, since it uses less digits than its factorization.

161452554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26908764.

The product of its digits is 24000, while the sum is 33.

The square root of 161452554 is about 12706.3981521122. The cubic root of 161452554 is about 544.5214259636.

The spelling of 161452554 in words is "one hundred sixty-one million, four hundred fifty-two thousand, five hundred fifty-four".