51205662 has 16 divisors (see below), whose sum is σ = 113790480. Its totient is φ = 17068536.

The previous prime is 51205639. The next prime is 51205663. The reversal of 51205662 is 26650215.

51205662 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51205663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474073 + ... + 474180.

It is an arithmetic number, because the mean of its divisors is an integer number (7111905).

Almost surely, 2^51205662 is an apocalyptic number.

51205662 is an abundant number, since it is smaller than the sum of its proper divisors (62584818).

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

51205662 is a wasteful number, since it uses less digits than its factorization.

51205662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948264 (or 948258 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 51205662 is about 7155.8131613395. The cubic root of 51205662 is about 371.3407940366.

Adding to 51205662 its reverse (26650215), we get a palindrome (77855877).

The spelling of 51205662 in words is "fifty-one million, two hundred five thousand, six hundred sixty-two".