77230457 has 2 divisors, whose sum is σ = 77230458. Its totient is φ = 77230456.

The previous prime is 77230411. The next prime is 77230471. The reversal of 77230457 is 75403277.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64705936 + 12524521 = 8044^2 + 3539^2 .

It is a cyclic number.

It is not a de Polignac number, because 77230457 - 2¹² = 77226361 is a prime.

It is not a weakly prime, because it can be changed into another prime (77230477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38615228 + 38615229.

It is an arithmetic number, because the mean of its divisors is an integer number (38615229).

Almost surely, 2^77230457 is an apocalyptic number.

It is an amenable number.

77230457 is a deficient number, since it is larger than the sum of its proper divisors (1).

77230457 is an equidigital number, since it uses as much as digits as its factorization.

77230457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41160, while the sum is 35.

The square root of 77230457 is about 8788.0860828738. The cubic root of 77230457 is about 425.8560958247.

The spelling of 77230457 in words is "seventy-seven million, two hundred thirty thousand, four hundred fifty-seven".