51222053 has 4 divisors (see below), whose sum is σ = 51237420. Its totient is φ = 51206688.

The previous prime is 51222047. The next prime is 51222107. The reversal of 51222053 is 35022215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37368769 + 13853284 = 6113^2 + 3722^2 .

It is a cyclic number.

It is not a de Polignac number, because 51222053 - 2¹⁶ = 51156517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51222253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350 + ... + 10127.

It is an arithmetic number, because the mean of its divisors is an integer number (12809355).

Almost surely, 2^51222053 is an apocalyptic number.

It is an amenable number.

51222053 is a deficient number, since it is larger than the sum of its proper divisors (15367).

51222053 is a wasteful number, since it uses less digits than its factorization.

51222053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15366.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 51222053 is about 7156.9583623212. The cubic root of 51222053 is about 371.3804120357.

Adding to 51222053 its reverse (35022215), we get a palindrome (86244268).

The spelling of 51222053 in words is "fifty-one million, two hundred twenty-two thousand, fifty-three".