161550465 has 8 divisors (see below), whose sum is σ = 258480768. Its totient is φ = 86160240.

The previous prime is 161550451. The next prime is 161550539. The reversal of 161550465 is 564055161.

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

It is not a de Polignac number, because 161550465 - 2⁴ = 161550449 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5385001 + ... + 5385030.

It is an arithmetic number, because the mean of its divisors is an integer number (32310096).

Almost surely, 2^161550465 is an apocalyptic number.

161550465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161550465 is a deficient number, since it is larger than the sum of its proper divisors (96930303).

161550465 is a wasteful number, since it uses less digits than its factorization.

161550465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10770039.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 161550465 is about 12710.2503909246. The cubic root of 161550465 is about 544.6314765890.

The spelling of 161550465 in words is "one hundred sixty-one million, five hundred fifty thousand, four hundred sixty-five".