51502006 has 4 divisors (see below), whose sum is σ = 77253012. Its totient is φ = 25751002.

The previous prime is 51501997. The next prime is 51502007. The reversal of 51502006 is 60020515.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51502007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12875500 + ... + 12875503.

It is an arithmetic number, because the mean of its divisors is an integer number (19313253).

Almost surely, 2^51502006 is an apocalyptic number.

51502006 is a deficient number, since it is larger than the sum of its proper divisors (25751006).

51502006 is a wasteful number, since it uses less digits than its factorization.

51502006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25751005.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 51502006 is about 7176.4898104853. The cubic root of 51502006 is about 372.0557736161.

The spelling of 51502006 in words is "fifty-one million, five hundred two thousand, six".