51404000 has 96 divisors (see below), whose sum is σ = 128786112. Its totient is φ = 20160000.

The previous prime is 51403991. The next prime is 51404053. The reversal of 51404000 is 40415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283910 + ... + 284090.

It is an arithmetic number, because the mean of its divisors is an integer number (1341522).

Almost surely, 2^51404000 is an apocalyptic number.

51404000 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 51404000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64393056).

51404000 is an abundant number, since it is smaller than the sum of its proper divisors (77382112).

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

51404000 is a wasteful number, since it uses less digits than its factorization.

51404000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 51404000 is about 7169.6582903232. The cubic root of 51404000 is about 371.8196219588.

Adding to 51404000 its reverse (40415), we get a palindrome (51444415).

The spelling of 51404000 in words is "fifty-one million, four hundred four thousand".