51522005 has 8 divisors (see below), whose sum is σ = 62197632. Its totient is φ = 40970128.

The previous prime is 51521993. The next prime is 51522007. The reversal of 51522005 is 50022515.

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 51522005 - 2⁶ = 51521941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51522007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30017 + ... + 31686.

It is an arithmetic number, because the mean of its divisors is an integer number (7774704).

Almost surely, 2^51522005 is an apocalyptic number.

It is an amenable number.

51522005 is a deficient number, since it is larger than the sum of its proper divisors (10675627).

51522005 is a wasteful number, since it uses less digits than its factorization.

51522005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61875.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 51522005 is about 7177.8830444637. The cubic root of 51522005 is about 372.1039256597.

The spelling of 51522005 in words is "fifty-one million, five hundred twenty-two thousand, five".