3002021561 has 16 divisors (see below), whose sum is σ = 3758333568. Its totient is φ = 2329516800.

The previous prime is 3002021557. The next prime is 3002021579. The reversal of 3002021561 is 1651202003.

It is a cyclic number.

It is not a de Polignac number, because 3002021561 - 2² = 3002021557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3002021501) 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, 62330 + ... + 99443.

It is an arithmetic number, because the mean of its divisors is an integer number (234895848).

Almost surely, 2^3002021561 is an apocalyptic number.

It is an amenable number.

3002021561 is a deficient number, since it is larger than the sum of its proper divisors (756312007).

3002021561 is a wasteful number, since it uses less digits than its factorization.

3002021561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162032.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 3002021561 is about 54790.7068853834. The cubic root of 3002021561 is about 1442.5734526223.

Adding to 3002021561 its reverse (1651202003), we get a palindrome (4653223564).

The spelling of 3002021561 in words is "three billion, two million, twenty-one thousand, five hundred sixty-one".