7450561 has 4 divisors (see below), whose sum is σ = 7632324. Its totient is φ = 7268800.

The previous prime is 7450559. The next prime is 7450577. The reversal of 7450561 is 1650547.

7450561 = 260² + 261² + ... + 341².

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 690561 + 6760000 = 831^2 + 2600^2 .

It is a cyclic number.

It is not a de Polignac number, because 7450561 - 2¹ = 7450559 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7450501) by changing a digit.

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, 90820 + ... + 90901.

It is an arithmetic number, because the mean of its divisors is an integer number (1908081).

Almost surely, 2^7450561 is an apocalyptic number.

It is an amenable number.

7450561 is a deficient number, since it is larger than the sum of its proper divisors (181763).

7450561 is a wasteful number, since it uses less digits than its factorization.

7450561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181762.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 7450561 is about 2729.5715781053. The cubic root of 7450561 is about 195.3123287593.

The spelling of 7450561 in words is "seven million, four hundred fifty thousand, five hundred sixty-one".