161576745 has 32 divisors (see below), whose sum is σ = 284390784. Its totient is φ = 78330560.

The previous prime is 161576717. The next prime is 161576747. The reversal of 161576745 is 547675161.

161576745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161576745 - 2¹⁰ = 161575721 is a prime.

It is a super-2 number, since 2×161576745² = 52214089049590050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161576697 and 161576706.

It is not an unprimeable number, because it can be changed into a prime (161576747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15919 + ... + 24011.

It is an arithmetic number, because the mean of its divisors is an integer number (8887212).

Almost surely, 2^161576745 is an apocalyptic number.

161576745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161576745 is a deficient number, since it is larger than the sum of its proper divisors (122814039).

161576745 is an equidigital number, since it uses as much as digits as its factorization.

161576745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8134 (or 8112 counting only the distinct ones).

The product of its digits is 176400, while the sum is 42.

The square root of 161576745 is about 12711.2841601468. The cubic root of 161576745 is about 544.6610073802.

The spelling of 161576745 in words is "one hundred sixty-one million, five hundred seventy-six thousand, seven hundred forty-five".