51522017 has 4 divisors (see below), whose sum is σ = 51727536. Its totient is φ = 51316500.

The previous prime is 51522007. The next prime is 51522043. The reversal of 51522017 is 71022515.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51522017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51521983 and 51522001.

It is not an unprimeable number, because it can be changed into a prime (51522007) 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 3 ways as a sum of consecutive naturals, for example, 102383 + ... + 102884.

It is an arithmetic number, because the mean of its divisors is an integer number (12931884).

Almost surely, 2^51522017 is an apocalyptic number.

It is an amenable number.

51522017 is a deficient number, since it is larger than the sum of its proper divisors (205519).

51522017 is a wasteful number, since it uses less digits than its factorization.

51522017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205518.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 51522017 is about 7177.8838803647. The cubic root of 51522017 is about 372.1039545486.

The spelling of 51522017 in words is "fifty-one million, five hundred twenty-two thousand, seventeen".