161200545 has 64 divisors (see below), whose sum is σ = 301397760. Its totient is φ = 72704000.

The previous prime is 161200513. The next prime is 161200573. The reversal of 161200545 is 545002161.

161200545 = T₅₄ + T₅₅ + ... + T₉₈₈.

It is not a de Polignac number, because 161200545 - 2⁵ = 161200513 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 283021 + ... + 283589.

It is an arithmetic number, because the mean of its divisors is an integer number (4709340).

Almost surely, 2^161200545 is an apocalyptic number.

161200545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161200545 is a deficient number, since it is larger than the sum of its proper divisors (140197215).

161200545 is a wasteful number, since it uses less digits than its factorization.

161200545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 161200545 is about 12696.4776611468. The cubic root of 161200545 is about 544.2379665080.

The spelling of 161200545 in words is "one hundred sixty-one million, two hundred thousand, five hundred forty-five".