77422001 has 4 divisors (see below), whose sum is σ = 77439600. Its totient is φ = 77404404.

The previous prime is 77421997. The next prime is 77422003. The reversal of 77422001 is 10022477.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10022477 = 521 ⋅19237.

It is a cyclic number.

It is not a de Polignac number, because 77422001 - 2² = 77421997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77422003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4370 + ... + 13188.

It is an arithmetic number, because the mean of its divisors is an integer number (19359900).

Almost surely, 2^77422001 is an apocalyptic number.

It is an amenable number.

77422001 is a deficient number, since it is larger than the sum of its proper divisors (17599).

77422001 is an equidigital number, since it uses as much as digits as its factorization.

77422001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17598.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 77422001 is about 8798.9772701150. The cubic root of 77422001 is about 426.2078691199.

Adding to 77422001 its reverse (10022477), we get a palindrome (87444478).

The spelling of 77422001 in words is "seventy-seven million, four hundred twenty-two thousand, one".