51020417 has 24 divisors (see below), whose sum is σ = 65598336. Its totient is φ = 39355008.

The previous prime is 51020413. The next prime is 51020419. The reversal of 51020417 is 71402015.

It is not a de Polignac number, because 51020417 - 2² = 51020413 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51020413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17828 + ... + 20490.

It is an arithmetic number, because the mean of its divisors is an integer number (2733264).

Almost surely, 2^51020417 is an apocalyptic number.

It is an amenable number.

51020417 is a deficient number, since it is larger than the sum of its proper divisors (14577919).

51020417 is a wasteful number, since it uses less digits than its factorization.

51020417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717 (or 2710 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 51020417 is about 7142.8577614285. The cubic root of 51020417 is about 370.8924572594.

The spelling of 51020417 in words is "fifty-one million, twenty thousand, four hundred seventeen".