77342051 has 2 divisors, whose sum is σ = 77342052. Its totient is φ = 77342050.

The previous prime is 77342047. The next prime is 77342071. The reversal of 77342051 is 15024377.

It is a weak prime.

It is an emirp because it is prime and its reverse (15024377) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77342051 - 2² = 77342047 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (77342011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38671025 + 38671026.

It is an arithmetic number, because the mean of its divisors is an integer number (38671026).

Almost surely, 2^77342051 is an apocalyptic number.

77342051 is a deficient number, since it is larger than the sum of its proper divisors (1).

77342051 is an equidigital number, since it uses as much as digits as its factorization.

77342051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 77342051 is about 8794.4329550006. The cubic root of 77342051 is about 426.0611104262.

It can be divided in two parts, 773 and 42051, that added together give a palindrome (42824).

The spelling of 77342051 in words is "seventy-seven million, three hundred forty-two thousand, fifty-one".