51421300 has 36 divisors (see below), whose sum is σ = 127526560. Its totient is φ = 17629920.

The previous prime is 51421283. The next prime is 51421303. The reversal of 51421300 is 312415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51421303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36030 + ... + 37429.

Almost surely, 2^51421300 is an apocalyptic number.

51421300 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51421300 is an abundant number, since it is smaller than the sum of its proper divisors (76105260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51421300 is a wasteful number, since it uses less digits than its factorization.

51421300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73480 (or 73473 counting only the distinct ones).

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

The square root of 51421300 is about 7170.8646619498. The cubic root of 51421300 is about 371.8613292058.

Adding to 51421300 its reverse (312415), we get a palindrome (51733715).

The spelling of 51421300 in words is "fifty-one million, four hundred twenty-one thousand, three hundred".