77223001 has 4 divisors (see below), whose sum is σ = 77251600. Its totient is φ = 77194404.

The previous prime is 77222989. The next prime is 77223017. The reversal of 77223001 is 10032277.

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.

It is a cyclic number.

It is not a de Polignac number, because 77223001 - 2¹⁵ = 77190233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77223031) 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, 9771 + ... + 15808.

It is an arithmetic number, because the mean of its divisors is an integer number (19312900).

Almost surely, 2^77223001 is an apocalyptic number.

It is an amenable number.

77223001 is a deficient number, since it is larger than the sum of its proper divisors (28599).

77223001 is a wasteful number, since it uses less digits than its factorization.

77223001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28598.

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 77223001 is about 8787.6618619517. The cubic root of 77223001 is about 425.8423910189.

Adding to 77223001 its reverse (10032277), we get a palindrome (87255278).

The spelling of 77223001 in words is "seventy-seven million, two hundred twenty-three thousand, one".