51620303 has 16 divisors (see below), whose sum is σ = 61779456. Its totient is φ = 42171360.

The previous prime is 51620287. The next prime is 51620311. The reversal of 51620303 is 30302615.

It is not a de Polignac number, because 51620303 - 2⁴ = 51620287 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 (51620323) 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, 78725 + ... + 79377.

It is an arithmetic number, because the mean of its divisors is an integer number (3861216).

Almost surely, 2^51620303 is an apocalyptic number.

51620303 is a deficient number, since it is larger than the sum of its proper divisors (10159153).

51620303 is a wasteful number, since it uses less digits than its factorization.

51620303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 51620303 is about 7184.7270651014. The cubic root of 51620303 is about 372.3404190098.

Adding to 51620303 its reverse (30302615), we get a palindrome (81922918).

The spelling of 51620303 in words is "fifty-one million, six hundred twenty thousand, three hundred three".