51120417 has 16 divisors (see below), whose sum is σ = 70822080. Its totient is φ = 32760000.

The previous prime is 51120403. The next prime is 51120437. The reversal of 51120417 is 71402115.

It is a happy number.

It is not a de Polignac number, because 51120417 - 2⁶ = 51120353 is a prime.

It is a super-2 number, since 2×51120417² = 5226594068507778, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51120393 and 51120402.

It is not an unprimeable number, because it can be changed into a prime (51120437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20667 + ... + 23007.

It is an arithmetic number, because the mean of its divisors is an integer number (4426380).

Almost surely, 2^51120417 is an apocalyptic number.

It is an amenable number.

51120417 is a deficient number, since it is larger than the sum of its proper divisors (19701663).

51120417 is a wasteful number, since it uses less digits than its factorization.

51120417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 51120417 is about 7149.8543341805. The cubic root of 51120417 is about 371.1346154816.

The spelling of 51120417 in words is "fifty-one million, one hundred twenty thousand, four hundred seventeen".