51105650 has 12 divisors (see below), whose sum is σ = 95056602. Its totient is φ = 20442240.

The previous prime is 51105647. The next prime is 51105667. The reversal of 51105650 is 5650115.

It can be written as a sum of positive squares in 3 ways, for example, as 28912129 + 22193521 = 5377^2 + 4711^2 .

It is a super-2 number, since 2×51105650² = 5223574923845000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 511007 + ... + 511106.

Almost surely, 2^51105650 is an apocalyptic number.

51105650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51105650 is a deficient number, since it is larger than the sum of its proper divisors (43950952).

51105650 is a wasteful number, since it uses less digits than its factorization.

51105650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022125 (or 1022120 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 51105650 is about 7148.8215812118. The cubic root of 51105650 is about 371.0988758627.

Adding to 51105650 its reverse (5650115), we get a palindrome (56755765).

The spelling of 51105650 in words is "fifty-one million, one hundred five thousand, six hundred fifty".