51220301 has 16 divisors (see below), whose sum is σ = 57127680. Its totient is φ = 45534720.

The previous prime is 51220291. The next prime is 51220307. The reversal of 51220301 is 10302215.

It is a happy number.

It is not a de Polignac number, because 51220301 - 2¹⁸ = 50958157 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 (51220307) 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, 110396 + ... + 110858.

It is an arithmetic number, because the mean of its divisors is an integer number (3570480).

Almost surely, 2^51220301 is an apocalyptic number.

It is an amenable number.

51220301 is a deficient number, since it is larger than the sum of its proper divisors (5907379).

51220301 is a wasteful number, since it uses less digits than its factorization.

51220301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 51220301 is about 7156.8359629099. The cubic root of 51220301 is about 371.3761777534.

Adding to 51220301 its reverse (10302215), we get a palindrome (61522516).

The spelling of 51220301 in words is "fifty-one million, two hundred twenty thousand, three hundred one".