161078450 has 24 divisors (see below), whose sum is σ = 322653828. Its totient is φ = 59474880.

The previous prime is 161078443. The next prime is 161078479. The reversal of 161078450 is 54870161.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3500641 + 157577809 = 1871^2 + 12553^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123257 + ... + 124556.

Almost surely, 2^161078450 is an apocalyptic number.

161078450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161078450 is an abundant number, since it is smaller than the sum of its proper divisors (161575378).

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

161078450 is a wasteful number, since it uses less digits than its factorization.

161078450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247838 (or 247833 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 161078450 is about 12691.6685270298. The cubic root of 161078450 is about 544.1005279365.

The spelling of 161078450 in words is "one hundred sixty-one million, seventy-eight thousand, four hundred fifty".