51362250 has 32 divisors (see below), whose sum is σ = 128202048. Its totient is φ = 13696400.

The previous prime is 51362249. The next prime is 51362251. The reversal of 51362250 is 5226315.

It is an interprime number because it is at equal distance from previous prime (51362249) and next prime (51362251).

It is a self number, because there is not a number n which added to its sum of digits gives 51362250.

It is not an unprimeable number, because it can be changed into a prime (51362251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33492 + ... + 34991.

It is an arithmetic number, because the mean of its divisors is an integer number (4006314).

Almost surely, 2^51362250 is an apocalyptic number.

51362250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51362250 is an abundant number, since it is smaller than the sum of its proper divisors (76839798).

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

51362250 is a wasteful number, since it uses less digits than its factorization.

51362250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68503 (or 68493 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 51362250 is about 7166.7461235905. The cubic root of 51362250 is about 371.7189315209.

Adding to 51362250 its reverse (5226315), we get a palindrome (56588565).

The spelling of 51362250 in words is "fifty-one million, three hundred sixty-two thousand, two hundred fifty".