1601160561 has 64 divisors (see below), whose sum is σ = 3184957440. Its totient is φ = 767776320.

The previous prime is 1601160559. The next prime is 1601160563. The reversal of 1601160561 is 1650611061.

1601160561 is a `hidden beast` number, since 1 + 601 + 1 + 6 + 0 + 56 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (1601160559) and next prime (1601160563).

It is not a de Polignac number, because 1601160561 - 2¹ = 1601160559 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1601160563) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2595 + ... + 56648.

It is an arithmetic number, because the mean of its divisors is an integer number (49764960).

Almost surely, 2^1601160561 is an apocalyptic number.

1601160561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1601160561 is a deficient number, since it is larger than the sum of its proper divisors (1583796879).

1601160561 is a wasteful number, since it uses less digits than its factorization.

1601160561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59283 (or 59277 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1601160561 is about 40014.5043827860. The cubic root of 1601160561 is about 1169.8898186842.

The spelling of 1601160561 in words is "one billion, six hundred one million, one hundred sixty thousand, five hundred sixty-one".