77351401 has 2 divisors, whose sum is σ = 77351402. Its totient is φ = 77351400.

The previous prime is 77351399. The next prime is 77351429. The reversal of 77351401 is 10415377.

It is an a-pointer prime, because the next prime (77351429) can be obtained adding 77351401 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76108176 + 1243225 = 8724^2 + 1115^2 .

It is a cyclic number.

It is not a de Polignac number, because 77351401 - 2¹ = 77351399 is a prime.

Together with 77351399, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 77351401.

It is not a weakly prime, because it can be changed into another prime (77351441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38675700 + 38675701.

It is an arithmetic number, because the mean of its divisors is an integer number (38675701).

Almost surely, 2^77351401 is an apocalyptic number.

It is an amenable number.

77351401 is a deficient number, since it is larger than the sum of its proper divisors (1).

77351401 is an equidigital number, since it uses as much as digits as its factorization.

77351401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 77351401 is about 8794.9645252269. The cubic root of 77351401 is about 426.0782787963.

Adding to 77351401 its reverse (10415377), we get a palindrome (87766778).

The spelling of 77351401 in words is "seventy-seven million, three hundred fifty-one thousand, four hundred one".