51027400 has 24 divisors (see below), whose sum is σ = 118639170. Its totient is φ = 20410880.

The previous prime is 51027397. The next prime is 51027433. The reversal of 51027400 is 472015.

It can be written as a sum of positive squares in 3 ways, for example, as 40018276 + 11009124 = 6326^2 + 3318^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 127369 + ... + 127768.

Almost surely, 2^51027400 is an apocalyptic number.

51027400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51027400 is an abundant number, since it is smaller than the sum of its proper divisors (67611770).

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

51027400 is a wasteful number, since it uses less digits than its factorization.

51027400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255153 (or 255144 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 51027400 is about 7143.3465546619. The cubic root of 51027400 is about 370.9093774391.

Adding to 51027400 its reverse (472015), we get a palindrome (51499415).

The spelling of 51027400 in words is "fifty-one million, twenty-seven thousand, four hundred".