51003660 has 24 divisors (see below), whose sum is σ = 142810416. Its totient is φ = 13600960.

The previous prime is 51003653. The next prime is 51003661. The reversal of 51003660 is 6630015.

It is not an unprimeable number, because it can be changed into a prime (51003661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424971 + ... + 425090.

It is an arithmetic number, because the mean of its divisors is an integer number (5950434).

Almost surely, 2^51003660 is an apocalyptic number.

It is an amenable number.

51003660 is an abundant number, since it is smaller than the sum of its proper divisors (91806756).

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

51003660 is a wasteful number, since it uses less digits than its factorization.

51003660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850073 (or 850071 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 51003660 is about 7141.6846752009. The cubic root of 51003660 is about 370.8518478601.

Adding to 51003660 its reverse (6630015), we get a palindrome (57633675).

The spelling of 51003660 in words is "fifty-one million, three thousand, six hundred sixty".