51001516 has 6 divisors (see below), whose sum is σ = 89252660. Its totient is φ = 25500756.

The previous prime is 51001493. The next prime is 51001519. The reversal of 51001516 is 61510015.

It is a junction number, because it is equal to n+sod(n) for n = 51001493 and 51001502.

It is not an unprimeable number, because it can be changed into a prime (51001519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6375186 + ... + 6375193.

Almost surely, 2^51001516 is an apocalyptic number.

It is an amenable number.

51001516 is a deficient number, since it is larger than the sum of its proper divisors (38251144).

51001516 is a wasteful number, since it uses less digits than its factorization.

51001516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12750383 (or 12750381 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 51001516 is about 7141.5345689845. The cubic root of 51001516 is about 370.8466513866.

The spelling of 51001516 in words is "fifty-one million, one thousand, five hundred sixteen".