51403000 has 64 divisors (see below), whose sum is σ = 131245920. Its totient is φ = 18688000.

The previous prime is 51402977. The next prime is 51403021. The reversal of 51403000 is 30415.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8664 + ... + 13336.

Almost surely, 2^51403000 is an apocalyptic number.

51403000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51403000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65622960).

51403000 is an abundant number, since it is smaller than the sum of its proper divisors (79842920).

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

51403000 is a wasteful number, since it uses less digits than its factorization.

51403000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4705 (or 4691 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 51403000 is about 7169.5885516534. The cubic root of 51403000 is about 371.8172108492.

Adding to 51403000 its reverse (30415), we get a palindrome (51433415).

The spelling of 51403000 in words is "fifty-one million, four hundred three thousand".