51502215 has 8 divisors (see below), whose sum is σ = 82403568. Its totient is φ = 27467840.

The previous prime is 51502207. The next prime is 51502249. The reversal of 51502215 is 51220515.

51502215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51502215 - 2³ = 51502207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51502191 and 51502200.

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 7 ways as a sum of consecutive naturals, for example, 1716726 + ... + 1716755.

It is an arithmetic number, because the mean of its divisors is an integer number (10300446).

Almost surely, 2^51502215 is an apocalyptic number.

51502215 is a deficient number, since it is larger than the sum of its proper divisors (30901353).

51502215 is a wasteful number, since it uses less digits than its factorization.

51502215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3433489.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 51502215 is about 7176.5043719070. The cubic root of 51502215 is about 372.0562768946.

The spelling of 51502215 in words is "fifty-one million, five hundred two thousand, two hundred fifteen".