51263000 has 32 divisors (see below), whose sum is σ = 119957760. Its totient is φ = 20504800.

The previous prime is 51262993. The next prime is 51263053. The reversal of 51263000 is 36215.

It is a self number, because there is not a number n which added to its sum of digits gives 51263000.

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 7 ways as a sum of consecutive naturals, for example, 24632 + ... + 26631.

It is an arithmetic number, because the mean of its divisors is an integer number (3748680).

Almost surely, 2^51263000 is an apocalyptic number.

51263000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51263000 is an abundant number, since it is smaller than the sum of its proper divisors (68694760).

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

51263000 is a wasteful number, since it uses less digits than its factorization.

51263000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51284 (or 51270 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 51263000 is about 7159.8184334521. The cubic root of 51263000 is about 371.4793463976.

Adding to 51263000 its reverse (36215), we get a palindrome (51299215).

The spelling of 51263000 in words is "fifty-one million, two hundred sixty-three thousand".