51025100 has 36 divisors (see below), whose sum is σ = 126543984. Its totient is φ = 17494080.

The previous prime is 51025087. The next prime is 51025129. The reversal of 51025100 is 152015.

It is a Harshad number since it is a multiple of its sum of digits (14).

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 11 ways as a sum of consecutive naturals, for example, 35747 + ... + 37146.

Almost surely, 2^51025100 is an apocalyptic number.

51025100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51025100 is an abundant number, since it is smaller than the sum of its proper divisors (75518884).

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

51025100 is a wasteful number, since it uses less digits than its factorization.

51025100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72914 (or 72907 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 51025100 is about 7143.1855638783. The cubic root of 51025100 is about 370.9038045875.

Adding to 51025100 its reverse (152015), we get a palindrome (51177115).

The spelling of 51025100 in words is "fifty-one million, twenty-five thousand, one hundred".