51420310 has 16 divisors (see below), whose sum is σ = 93729600. Its totient is φ = 20307456.

The previous prime is 51420307. The next prime is 51420319. The reversal of 51420310 is 1302415.

It is a super-2 number, since 2×51420310² = 5288096560992200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51420319) 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 7 ways as a sum of consecutive naturals, for example, 31755 + ... + 33334.

It is an arithmetic number, because the mean of its divisors is an integer number (5858100).

Almost surely, 2^51420310 is an apocalyptic number.

51420310 is a deficient number, since it is larger than the sum of its proper divisors (42309290).

51420310 is a wasteful number, since it uses less digits than its factorization.

51420310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65175.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 51420310 is about 7170.7956322852. The cubic root of 51420310 is about 371.8589427429.

Adding to 51420310 its reverse (1302415), we get a palindrome (52722725).

The spelling of 51420310 in words is "fifty-one million, four hundred twenty thousand, three hundred ten".