51515229 has 16 divisors (see below), whose sum is σ = 70588224. Its totient is φ = 33398400.

The previous prime is 51515227. The next prime is 51515249. The reversal of 51515229 is 92251515.

51515229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51515229 - 2¹ = 51515227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51515196 and 51515205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51515221) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 59967 + ... + 60819.

It is an arithmetic number, because the mean of its divisors is an integer number (4411764).

Almost surely, 2^51515229 is an apocalyptic number.

It is an amenable number.

51515229 is a deficient number, since it is larger than the sum of its proper divisors (19072995).

51515229 is a wasteful number, since it uses less digits than its factorization.

51515229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388.

The product of its digits is 4500, while the sum is 30.

The square root of 51515229 is about 7177.4110234819. The cubic root of 51515229 is about 372.0876123275.

The spelling of 51515229 in words is "fifty-one million, five hundred fifteen thousand, two hundred twenty-nine".