51161622 has 16 divisors (see below), whose sum is σ = 103280832. Its totient is φ = 16894280.

The previous prime is 51161611. The next prime is 51161647. The reversal of 51161622 is 22616115.

It is a junction number, because it is equal to n+sod(n) for n = 51161592 and 51161601.

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, 39204 + ... + 40487.

It is an arithmetic number, because the mean of its divisors is an integer number (6455052).

Almost surely, 2^51161622 is an apocalyptic number.

51161622 is an abundant number, since it is smaller than the sum of its proper divisors (52119210).

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

51161622 is a wasteful number, since it uses less digits than its factorization.

51161622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79803.

The product of its digits is 720, while the sum is 24.

The square root of 51161622 is about 7152.7352809957. The cubic root of 51161622 is about 371.2343049062.

Adding to 51161622 its reverse (22616115), we get a palindrome (73777737).

The spelling of 51161622 in words is "fifty-one million, one hundred sixty-one thousand, six hundred twenty-two".