76540181 has 2 divisors, whose sum is σ = 76540182. Its totient is φ = 76540180.

The previous prime is 76540157. The next prime is 76540207. The reversal of 76540181 is 18104567.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52432081 + 24108100 = 7241^2 + 4910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76540181 is a prime.

It is a super-2 number, since 2×76540181² = 11716798615025522, which contains 22 as substring.

It is a Chen prime.

It is equal to p_4479242 and since 76540181 and 4479242 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76240181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38270090 + 38270091.

It is an arithmetic number, because the mean of its divisors is an integer number (38270091).

Almost surely, 2^76540181 is an apocalyptic number.

It is an amenable number.

76540181 is a deficient number, since it is larger than the sum of its proper divisors (1).

76540181 is an equidigital number, since it uses as much as digits as its factorization.

76540181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 76540181 is about 8748.7245356109. The cubic root of 76540181 is about 424.5835477662.

The spelling of 76540181 in words is "seventy-six million, five hundred forty thousand, one hundred eighty-one".