77030531 has 2 divisors, whose sum is σ = 77030532. Its totient is φ = 77030530.

The previous prime is 77030521. The next prime is 77030537. The reversal of 77030531 is 13503077.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77030531 - 2¹⁸ = 76768387 is a prime.

It is a super-2 number, since 2×77030531² = 11867405412283922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77030531.

It is not a weakly prime, because it can be changed into another prime (77030537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38515265 + 38515266.

It is an arithmetic number, because the mean of its divisors is an integer number (38515266).

Almost surely, 2^77030531 is an apocalyptic number.

77030531 is a deficient number, since it is larger than the sum of its proper divisors (1).

77030531 is an equidigital number, since it uses as much as digits as its factorization.

77030531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2205, while the sum is 26.

The square root of 77030531 is about 8776.7038801591. The cubic root of 77030531 is about 425.4883079431.

The spelling of 77030531 in words is "seventy-seven million, thirty thousand, five hundred thirty-one".