51631350 has 24 divisors (see below), whose sum is σ = 128046120. Its totient is φ = 13768320.

The previous prime is 51631291. The next prime is 51631351. The reversal of 51631350 is 5313615.

It is a self number, because there is not a number n which added to its sum of digits gives 51631350.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51631351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171955 + ... + 172254.

It is an arithmetic number, because the mean of its divisors is an integer number (5335255).

Almost surely, 2^51631350 is an apocalyptic number.

51631350 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51631350 is an abundant number, since it is smaller than the sum of its proper divisors (76414770).

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

51631350 is a wasteful number, since it uses less digits than its factorization.

51631350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344224 (or 344219 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 51631350 is about 7185.4958075278. The cubic root of 51631350 is about 372.3669780121.

Adding to 51631350 its reverse (5313615), we get a palindrome (56944965).

The spelling of 51631350 in words is "fifty-one million, six hundred thirty-one thousand, three hundred fifty".