161404255 has 8 divisors (see below), whose sum is σ = 193753872. Its totient is φ = 129077568.

The previous prime is 161404253. The next prime is 161404261. The reversal of 161404255 is 552404161.

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

It is a cyclic number.

It is not a de Polignac number, because 161404255 - 2¹ = 161404253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161404253) 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, 21699 + ... + 28171.

It is an arithmetic number, because the mean of its divisors is an integer number (24219234).

Almost surely, 2^161404255 is an apocalyptic number.

161404255 is a deficient number, since it is larger than the sum of its proper divisors (32349617).

161404255 is an equidigital number, since it uses as much as digits as its factorization.

161404255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11465.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 161404255 is about 12704.4974320120. The cubic root of 161404255 is about 544.4671221600.

The spelling of 161404255 in words is "one hundred sixty-one million, four hundred four thousand, two hundred fifty-five".