51420303 has 48 divisors (see below), whose sum is σ = 85003776. Its totient is φ = 29675520.

The previous prime is 51420301. The next prime is 51420307. The reversal of 51420303 is 30302415.

It is not a de Polignac number, because 51420303 - 2¹ = 51420301 is a prime.

It is a super-2 number, since 2×51420303² = 5288095121223618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51420301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 199951 + ... + 200207.

It is an arithmetic number, because the mean of its divisors is an integer number (1770912).

Almost surely, 2^51420303 is an apocalyptic number.

51420303 is a deficient number, since it is larger than the sum of its proper divisors (33583473).

51420303 is a wasteful number, since it uses less digits than its factorization.

51420303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 51420303 is about 7170.7951441943. The cubic root of 51420303 is about 371.8589258688.

Adding to 51420303 its reverse (30302415), we get a palindrome (81722718).

The spelling of 51420303 in words is "fifty-one million, four hundred twenty thousand, three hundred three".