51946550 has 24 divisors (see below), whose sum is σ = 98263800. Its totient is φ = 20425280.

The previous prime is 51946523. The next prime is 51946553. The reversal of 51946550 is 5564915.

It is a self number, because there is not a number n which added to its sum of digits gives 51946550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51946553) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5855 + ... + 11754.

It is an arithmetic number, because the mean of its divisors is an integer number (4094325).

Almost surely, 2^51946550 is an apocalyptic number.

51946550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51946550 is a deficient number, since it is larger than the sum of its proper divisors (46317250).

51946550 is a wasteful number, since it uses less digits than its factorization.

51946550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17680 (or 17675 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 51946550 is about 7207.3955073938. The cubic root of 51946550 is about 373.1231854794.

The spelling of 51946550 in words is "fifty-one million, nine hundred forty-six thousand, five hundred fifty".