75945161 has 6 divisors (see below), whose sum is σ = 77854686. Its totient is φ = 74038400.

The previous prime is 75945119. The next prime is 75945167. The reversal of 75945161 is 16154957.

It can be written as a sum of positive squares in 3 ways, for example, as 4644025 + 71301136 = 2155^2 + 8444^2 .

It is not a de Polignac number, because 75945161 - 2¹⁴ = 75928777 is a prime.

It is a super-3 number, since 3×75945161³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75945167) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55121 + ... + 56481.

It is an arithmetic number, because the mean of its divisors is an integer number (12975781).

Almost surely, 2^75945161 is an apocalyptic number.

It is an amenable number.

75945161 is a deficient number, since it is larger than the sum of its proper divisors (1909525).

75945161 is an frugal number, since it uses more digits than its factorization.

75945161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763 (or 1402 counting only the distinct ones).

The product of its digits is 37800, while the sum is 38.

The square root of 75945161 is about 8714.6520871461. The cubic root of 75945161 is about 423.4804530648.

The spelling of 75945161 in words is "seventy-five million, nine hundred forty-five thousand, one hundred sixty-one".