7561040 has 20 divisors (see below), whose sum is σ = 17579604. Its totient is φ = 3024384.

The previous prime is 7561019. The next prime is 7561063. The reversal of 7561040 is 401657.

It can be written as a sum of positive squares in 2 ways, for example, as 4910656 + 2650384 = 2216^2 + 1628^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 7560997 and 7561015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47177 + ... + 47336.

Almost surely, 2^7561040 is an apocalyptic number.

It is an amenable number.

7561040 is an abundant number, since it is smaller than the sum of its proper divisors (10018564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7561040 is a wasteful number, since it uses less digits than its factorization.

7561040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94526 (or 94520 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 7561040 is about 2749.7345326413. The cubic root of 7561040 is about 196.2729779578.

Adding to 7561040 its reverse (401657), we get a palindrome (7962697).

The spelling of 7561040 in words is "seven million, five hundred sixty-one thousand, forty".