247220001 has 48 divisors (see below), whose sum is σ = 454896000. Its totient is φ = 125950464.

The previous prime is 247219937. The next prime is 247220011. The reversal of 247220001 is 100022742.

247220001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 247220001 - 2⁶ = 247219937 is a prime.

It is a super-2 number, since 2×247220001² = 122235457788880002, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (247220011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14275 + ... + 26423.

It is an arithmetic number, because the mean of its divisors is an integer number (9477000).

Almost surely, 2^247220001 is an apocalyptic number.

247220001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

247220001 is a deficient number, since it is larger than the sum of its proper divisors (207675999).

247220001 is a wasteful number, since it uses less digits than its factorization.

247220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12198 (or 12195 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 247220001 is about 15723.2312518769. The cubic root of 247220001 is about 627.6167629789.

Adding to 247220001 its reverse (100022742), we get a palindrome (347242743).

The spelling of 247220001 in words is "two hundred forty-seven million, two hundred twenty thousand, one".