51002492 has 18 divisors (see below), whose sum is σ = 90061944. Its totient is φ = 25272520.

The previous prime is 51002467. The next prime is 51002507. The reversal of 51002492 is 29420015.

51002492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 68273 + ... + 69015.

Almost surely, 2^51002492 is an apocalyptic number.

It is an amenable number.

51002492 is a deficient number, since it is larger than the sum of its proper divisors (39059452).

51002492 is a wasteful number, since it uses less digits than its factorization.

51002492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 51002492 is about 7141.6029013100. The cubic root of 51002492 is about 370.8490169635.

The spelling of 51002492 in words is "fifty-one million, two thousand, four hundred ninety-two".