161485457 has 8 divisors (see below), whose sum is σ = 185044800. Its totient is φ = 138048624.

The previous prime is 161485433. The next prime is 161485459. The reversal of 161485457 is 754584161.

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

It is not a de Polignac number, because 161485457 - 2⁸ = 161485201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161485459) 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, 27782 + ... + 33087.

It is an arithmetic number, because the mean of its divisors is an integer number (23130600).

Almost surely, 2^161485457 is an apocalyptic number.

It is an amenable number.

161485457 is a deficient number, since it is larger than the sum of its proper divisors (23559343).

161485457 is an equidigital number, since it uses as much as digits as its factorization.

161485457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61255.

The product of its digits is 134400, while the sum is 41.

The square root of 161485457 is about 12707.6928275750. The cubic root of 161485457 is about 544.5584134481.

The spelling of 161485457 in words is "one hundred sixty-one million, four hundred eighty-five thousand, four hundred fifty-seven".