161161424 has 10 divisors (see below), whose sum is σ = 312250290. Its totient is φ = 80580704.

The previous prime is 161161417. The next prime is 161161433. The reversal of 161161424 is 424161161.

It can be written as a sum of positive squares in only one way, i.e., 122323600 + 38837824 = 11060^2 + 6232^2 .

It is a junction number, because it is equal to n+sod(n) for n = 161161393 and 161161402.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5036279 + ... + 5036310.

It is an arithmetic number, because the mean of its divisors is an integer number (31225029).

Almost surely, 2^161161424 is an apocalyptic number.

It is an amenable number.

161161424 is a deficient number, since it is larger than the sum of its proper divisors (151088866).

161161424 is a wasteful number, since it uses less digits than its factorization.

161161424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10072597 (or 10072591 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 161161424 is about 12694.9369435220. The cubic root of 161161424 is about 544.1939367642.

The spelling of 161161424 in words is "one hundred sixty-one million, one hundred sixty-one thousand, four hundred twenty-four".