51352500 has 120 divisors (see below), whose sum is σ = 154300608. Its totient is φ = 13280000.

The previous prime is 51352489. The next prime is 51352517. The reversal of 51352500 is 525315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 307417 + ... + 307583.

Almost surely, 2^51352500 is an apocalyptic number.

51352500 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 51352500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77150304).

51352500 is an abundant number, since it is smaller than the sum of its proper divisors (102948108).

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

51352500 is a wasteful number, since it uses less digits than its factorization.

51352500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 51352500 is about 7166.0658662895. The cubic root of 51352500 is about 371.6954091289.

Adding to 51352500 its reverse (525315), we get a palindrome (51877815).

The spelling of 51352500 in words is "fifty-one million, three hundred fifty-two thousand, five hundred".