161030250 has 48 divisors (see below), whose sum is σ = 435431880. Its totient is φ = 42940800.

The previous prime is 161030231. The next prime is 161030257. The reversal of 161030250 is 52030161.

161030250 is a `hidden beast` number, since 1 + 610 + 3 + 0 + 2 + 50 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 71216721 + 89813529 = 8439^2 + 9477^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161030257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33535 + ... + 38034.

Almost surely, 2^161030250 is an apocalyptic number.

161030250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161030250 is an abundant number, since it is smaller than the sum of its proper divisors (274401630).

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

161030250 is a wasteful number, since it uses less digits than its factorization.

161030250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71592 (or 71579 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 161030250 is about 12689.7695014527. The cubic root of 161030250 is about 544.0462515642.

The spelling of 161030250 in words is "one hundred sixty-one million, thirty thousand, two hundred fifty".