51200370 has 128 divisors (see below), whose sum is σ = 152409600. Its totient is φ = 12144384.

The previous prime is 51200353. The next prime is 51200381. The reversal of 51200370 is 7300215.

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

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 63 ways as a sum of consecutive naturals, for example, 101539 + ... + 102041.

It is an arithmetic number, because the mean of its divisors is an integer number (1190700).

Almost surely, 2^51200370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51200370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76204800).

51200370 is an abundant number, since it is smaller than the sum of its proper divisors (101209230).

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

51200370 is a wasteful number, since it uses less digits than its factorization.

51200370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 51200370 is about 7155.4433824886. The cubic root of 51200370 is about 371.3280011597.

Adding to 51200370 its reverse (7300215), we get a palindrome (58500585).

The spelling of 51200370 in words is "fifty-one million, two hundred thousand, three hundred seventy".