51245017 has 8 divisors (see below), whose sum is σ = 52171776. Its totient is φ = 50323152.

The previous prime is 51244951. The next prime is 51245027. The reversal of 51245017 is 71054215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51245017 - 2¹⁹ = 50720729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51244982 and 51245000.

It is not an unprimeable number, because it can be changed into a prime (51245027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24663 + ... + 26659.

It is an arithmetic number, because the mean of its divisors is an integer number (6521472).

Almost surely, 2^51245017 is an apocalyptic number.

It is an amenable number.

51245017 is a deficient number, since it is larger than the sum of its proper divisors (926759).

51245017 is a wasteful number, since it uses less digits than its factorization.

51245017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 51245017 is about 7158.5624953618. The cubic root of 51245017 is about 371.4359031449.

The spelling of 51245017 in words is "fifty-one million, two hundred forty-five thousand, seventeen".