602500561 has 4 divisors (see below), whose sum is σ = 648846772. Its totient is φ = 556154352.

The previous prime is 602500543. The next prime is 602500579. The reversal of 602500561 is 165005206.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 165005206 = 2 ⋅82502603.

It is an interprime number because it is at equal distance from previous prime (602500543) and next prime (602500579).

It can be written as a sum of positive squares in 2 ways, for example, as 168194961 + 434305600 = 12969^2 + 20840^2 .

It is not a de Polignac number, because 602500561 - 2⁵ = 602500529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (602500501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23173086 + ... + 23173111.

It is an arithmetic number, because the mean of its divisors is an integer number (162211693).

Almost surely, 2^602500561 is an apocalyptic number.

It is an amenable number.

602500561 is a deficient number, since it is larger than the sum of its proper divisors (46346211).

602500561 is a wasteful number, since it uses less digits than its factorization.

602500561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46346210.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 602500561 is about 24545.8868448463. The cubic root of 602500561 is about 844.6027384649.

Adding to 602500561 its reverse (165005206), we get a palindrome (767505767).

The spelling of 602500561 in words is "six hundred two million, five hundred thousand, five hundred sixty-one".