75585131 has 2 divisors, whose sum is σ = 75585132. Its totient is φ = 75585130.

The previous prime is 75585127. The next prime is 75585137. The reversal of 75585131 is 13158557.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75585131 - 2² = 75585127 is a prime.

It is a super-2 number, since 2×75585131² = 11426224056574322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 75585091 and 75585100.

It is not a weakly prime, because it can be changed into another prime (75585137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37792565 + 37792566.

It is an arithmetic number, because the mean of its divisors is an integer number (37792566).

Almost surely, 2^75585131 is an apocalyptic number.

75585131 is a deficient number, since it is larger than the sum of its proper divisors (1).

75585131 is an equidigital number, since it uses as much as digits as its factorization.

75585131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21000, while the sum is 35.

The square root of 75585131 is about 8693.9709569333. The cubic root of 75585131 is about 422.8102008669.

The spelling of 75585131 in words is "seventy-five million, five hundred eighty-five thousand, one hundred thirty-one".