51611002 has 16 divisors (see below), whose sum is σ = 78948072. Its totient is φ = 25297920.

The previous prime is 51610991. The next prime is 51611003. The reversal of 51611002 is 20011615.

It is a happy number.

51611002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 32592681 + 19018321 = 5709^2 + 4361^2 .

It is not an unprimeable number, because it can be changed into a prime (51611003) 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 7 ways as a sum of consecutive naturals, for example, 52338 + ... + 53314.

Almost surely, 2^51611002 is an apocalyptic number.

51611002 is a deficient number, since it is larger than the sum of its proper divisors (27337070).

51611002 is a wasteful number, since it uses less digits than its factorization.

51611002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 51611002 is about 7184.0797601363. The cubic root of 51611002 is about 372.3180547717.

Adding to 51611002 its reverse (20011615), we get a palindrome (71622617).

The spelling of 51611002 in words is "fifty-one million, six hundred eleven thousand, two".