75445161 has 16 divisors (see below), whose sum is σ = 110085888. Its totient is φ = 45579600.

The previous prime is 75445157. The next prime is 75445163. The reversal of 75445161 is 16154457.

It is not a de Polignac number, because 75445161 - 2² = 75445157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75445163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7470 + ... + 14376.

It is an arithmetic number, because the mean of its divisors is an integer number (6880368).

Almost surely, 2^75445161 is an apocalyptic number.

It is an amenable number.

75445161 is a deficient number, since it is larger than the sum of its proper divisors (34640727).

75445161 is a wasteful number, since it uses less digits than its factorization.

75445161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7252.

The product of its digits is 16800, while the sum is 33.

The square root of 75445161 is about 8685.9173954166. The cubic root of 75445161 is about 422.5490502440.

The spelling of 75445161 in words is "seventy-five million, four hundred forty-five thousand, one hundred sixty-one".