51010500 has 96 divisors (see below), whose sum is σ = 153474048. Its totient is φ = 13152000.

The previous prime is 51010499. The next prime is 51010511. The reversal of 51010500 is 501015.

It is a super-2 number, since 2×51010500² = 5204142220500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45952 + ... + 47048.

It is an arithmetic number, because the mean of its divisors is an integer number (1598688).

Almost surely, 2^51010500 is an apocalyptic number.

51010500 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 51010500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76737024).

51010500 is an abundant number, since it is smaller than the sum of its proper divisors (102463548).

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

51010500 is a wasteful number, since it uses less digits than its factorization.

51010500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150 (or 1138 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 12.

The square root of 51010500 is about 7142.1635377524. The cubic root of 51010500 is about 370.8684251885.

Adding to 51010500 its reverse (501015), we get a palindrome (51511515).

The spelling of 51010500 in words is "fifty-one million, ten thousand, five hundred".