51140700 has 288 divisors, whose sum is σ = 186654720. Its totient is φ = 11923200.

The previous prime is 51140689. The next prime is 51140737. The reversal of 51140700 is 704115.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 95 ways as a sum of consecutive naturals, for example, 1088077 + ... + 1088123.

Almost surely, 2^51140700 is an apocalyptic number.

51140700 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 51140700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93327360).

51140700 is an abundant number, since it is smaller than the sum of its proper divisors (135514020).

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

51140700 is a wasteful number, since it uses less digits than its factorization.

51140700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 51140700 is about 7151.2726140177. The cubic root of 51140700 is about 371.1836939026.

Adding to 51140700 its reverse (704115), we get a palindrome (51844815).

The spelling of 51140700 in words is "fifty-one million, one hundred forty thousand, seven hundred".