75576145 has 12 divisors (see below), whose sum is σ = 92451996. Its totient is φ = 59309120.

The previous prime is 75576143. The next prime is 75576181. The reversal of 75576145 is 54167557.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 355216 + 75220929 = 596^2 + 8673^2 .

It is not a de Polignac number, because 75576145 - 2¹ = 75576143 is a prime.

It is a super-2 number, since 2×75576145² = 11423507386122050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75576098 and 75576107.

It is not an unprimeable number, because it can be changed into a prime (75576143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11355 + ... + 16735.

It is an arithmetic number, because the mean of its divisors is an integer number (7704333).

Almost surely, 2^75576145 is an apocalyptic number.

It is an amenable number.

75576145 is a deficient number, since it is larger than the sum of its proper divisors (16875851).

75576145 is an equidigital number, since it uses as much as digits as its factorization.

75576145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5492 (or 5439 counting only the distinct ones).

The product of its digits is 147000, while the sum is 40.

The square root of 75576145 is about 8693.4541466554. The cubic root of 75576145 is about 422.7934448243.

The spelling of 75576145 in words is "seventy-five million, five hundred seventy-six thousand, one hundred forty-five".