51030345 has 32 divisors (see below), whose sum is σ = 86873472. Its totient is φ = 25490432.

The previous prime is 51030341. The next prime is 51030359. The reversal of 51030345 is 54303015.

It is a cyclic number.

It is not a de Polignac number, because 51030345 - 2² = 51030341 is a prime.

It is a super-2 number, since 2×51030345² = 5208192221638050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51030341) 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 in 31 ways as a sum of consecutive naturals, for example, 74374 + ... + 75056.

It is an arithmetic number, because the mean of its divisors is an integer number (2714796).

Almost surely, 2^51030345 is an apocalyptic number.

It is an amenable number.

51030345 is a deficient number, since it is larger than the sum of its proper divisors (35843127).

51030345 is a wasteful number, since it uses less digits than its factorization.

51030345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 51030345 is about 7143.5526875638. The cubic root of 51030345 is about 370.9165128677.

The spelling of 51030345 in words is "fifty-one million, thirty thousand, three hundred forty-five".