7553242561 has 4 divisors (see below), whose sum is σ = 7557303124. Its totient is φ = 7549182000.

The previous prime is 7553242559. The next prime is 7553242591. The reversal of 7553242561 is 1652423557.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2035724161 + 5517518400 = 45119^2 + 74280^2 .

It is a cyclic number.

It is not a de Polignac number, because 7553242561 - 2¹ = 7553242559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7553242591) 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, 2027490 + ... + 2031211.

It is an arithmetic number, because the mean of its divisors is an integer number (1889325781).

Almost surely, 2^7553242561 is an apocalyptic number.

It is an amenable number.

7553242561 is a deficient number, since it is larger than the sum of its proper divisors (4060563).

7553242561 is a wasteful number, since it uses less digits than its factorization.

7553242561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4060562.

The product of its digits is 252000, while the sum is 40.

The square root of 7553242561 is about 86909.3928237909. The cubic root of 7553242561 is about 1962.0548490719.

The spelling of 7553242561 in words is "seven billion, five hundred fifty-three million, two hundred forty-two thousand, five hundred sixty-one".