7002561 has 4 divisors (see below), whose sum is σ = 9336752. Its totient is φ = 4668372.

The previous prime is 7002551. The next prime is 7002581. The reversal of 7002561 is 1652007.

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 not a de Polignac number, because 7002561 - 2⁵ = 7002529 is a prime.

It is a D-number.

It is a Duffinian number.

7002561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7002551) 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, 1167091 + ... + 1167096.

It is an arithmetic number, because the mean of its divisors is an integer number (2334188).

Almost surely, 2^7002561 is an apocalyptic number.

It is an amenable number.

7002561 is a deficient number, since it is larger than the sum of its proper divisors (2334191).

7002561 is a wasteful number, since it uses less digits than its factorization.

7002561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334190.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 7002561 is about 2646.2352503132. The cubic root of 7002561 is about 191.3164440841.

Adding to 7002561 its reverse (1652007), we get a palindrome (8654568).

The spelling of 7002561 in words is "seven million, two thousand, five hundred sixty-one".