76545431 has 2 divisors, whose sum is σ = 76545432. Its totient is φ = 76545430.

The previous prime is 76545421. The next prime is 76545467. The reversal of 76545431 is 13454567.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76545431 - 2⁶ = 76545367 is a prime.

It is a super-2 number, since 2×76545431² = 11718406013951522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 76545391 and 76545400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76545421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38272715 + 38272716.

It is an arithmetic number, because the mean of its divisors is an integer number (38272716).

Almost surely, 2^76545431 is an apocalyptic number.

76545431 is a deficient number, since it is larger than the sum of its proper divisors (1).

76545431 is an equidigital number, since it uses as much as digits as its factorization.

76545431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 35.

The square root of 76545431 is about 8749.0245742025. The cubic root of 76545431 is about 424.5932551410.

Adding to 76545431 its reverse (13454567), we get a palindrome (89999998).

The spelling of 76545431 in words is "seventy-six million, five hundred forty-five thousand, four hundred thirty-one".