51235000 has 40 divisors (see below), whose sum is σ = 120055320. Its totient is φ = 20492000.

The previous prime is 51234979. The next prime is 51235003. The reversal of 51235000 is 53215.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51235003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 124 + ... + 10123.

It is an arithmetic number, because the mean of its divisors is an integer number (3001383).

Almost surely, 2^51235000 is an apocalyptic number.

51235000 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 51235000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60027660).

51235000 is an abundant number, since it is smaller than the sum of its proper divisors (68820320).

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

51235000 is a wasteful number, since it uses less digits than its factorization.

51235000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10273 (or 10254 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 51235000 is about 7157.8628095263. The cubic root of 51235000 is about 371.4116997126.

Adding to 51235000 its reverse (53215), we get a palindrome (51288215).

The spelling of 51235000 in words is "fifty-one million, two hundred thirty-five thousand".