51363515 has 12 divisors (see below), whose sum is σ = 71699616. Its totient is φ = 35220528.

The previous prime is 51363503. The next prime is 51363523. The reversal of 51363515 is 51536315.

It is not a de Polignac number, because 51363515 - 2⁶ = 51363451 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104579 + ... + 105068.

It is an arithmetic number, because the mean of its divisors is an integer number (5974968).

Almost surely, 2^51363515 is an apocalyptic number.

51363515 is a deficient number, since it is larger than the sum of its proper divisors (20336101).

51363515 is a wasteful number, since it uses less digits than its factorization.

51363515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209666 (or 209659 counting only the distinct ones).

The product of its digits is 6750, while the sum is 29.

The square root of 51363515 is about 7166.8343778826. The cubic root of 51363515 is about 371.7219831823.

The spelling of 51363515 in words is "fifty-one million, three hundred sixty-three thousand, five hundred fifteen".