51522245 has 8 divisors (see below), whose sum is σ = 62012184. Its totient is φ = 41094144.

The previous prime is 51522239. The next prime is 51522253. The reversal of 51522245 is 54222515.

It can be written as a sum of positive squares in 4 ways, for example, as 813604 + 50708641 = 902^2 + 7121^2 .

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 51522245 - 2¹² = 51518149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 13604 + ... + 16973.

It is an arithmetic number, because the mean of its divisors is an integer number (7751523).

Almost surely, 2^51522245 is an apocalyptic number.

It is an amenable number.

51522245 is a deficient number, since it is larger than the sum of its proper divisors (10489939).

51522245 is a wasteful number, since it uses less digits than its factorization.

51522245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30919.

The product of its digits is 4000, while the sum is 26.

The square root of 51522245 is about 7177.8997624653. The cubic root of 51522245 is about 372.1045034374.

The spelling of 51522245 in words is "fifty-one million, five hundred twenty-two thousand, two hundred forty-five".