77224001 has 16 divisors (see below), whose sum is σ = 81100800. Its totient is φ = 73474128.

The previous prime is 77223977. The next prime is 77224003. The reversal of 77224001 is 10042277.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77224001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77224003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431330 + ... + 431508.

It is an arithmetic number, because the mean of its divisors is an integer number (5068800).

Almost surely, 2^77224001 is an apocalyptic number.

It is an amenable number.

77224001 is a deficient number, since it is larger than the sum of its proper divisors (3876799).

77224001 is a wasteful number, since it uses less digits than its factorization.

77224001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428.

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

The square root of 77224001 is about 8787.7187597237. The cubic root of 77224001 is about 425.8442291610.

Adding to 77224001 its reverse (10042277), we get a palindrome (87266278).

The spelling of 77224001 in words is "seventy-seven million, two hundred twenty-four thousand, one".