51063215 has 16 divisors (see below), whose sum is σ = 70244928. Its totient is φ = 34907136.

The previous prime is 51063191. The next prime is 51063227. The reversal of 51063215 is 51236015.

It is a cyclic number.

It is not a de Polignac number, because 51063215 - 2⁸ = 51062959 is a prime.

It is a super-2 number, since 2×51063215² = 5214903852272450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10289 + ... + 14421.

It is an arithmetic number, because the mean of its divisors is an integer number (4390308).

Almost surely, 2^51063215 is an apocalyptic number.

51063215 is a deficient number, since it is larger than the sum of its proper divisors (19181713).

51063215 is a wasteful number, since it uses less digits than its factorization.

51063215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4498.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 51063215 is about 7145.8529931702. The cubic root of 51063215 is about 370.9961348323.

The spelling of 51063215 in words is "fifty-one million, sixty-three thousand, two hundred fifteen".