51102620 has 12 divisors (see below), whose sum is σ = 107315544. Its totient is φ = 20441040.

The previous prime is 51102599. The next prime is 51102637. The reversal of 51102620 is 2620115.

51102620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51102620² = 5222955541728800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1277546 + ... + 1277585.

It is an arithmetic number, because the mean of its divisors is an integer number (8942962).

Almost surely, 2^51102620 is an apocalyptic number.

It is an amenable number.

51102620 is an abundant number, since it is smaller than the sum of its proper divisors (56212924).

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

51102620 is a wasteful number, since it uses less digits than its factorization.

51102620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555140 (or 2555138 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 51102620 is about 7148.6096550308. The cubic root of 51102620 is about 371.0915416977.

Adding to 51102620 its reverse (2620115), we get a palindrome (53722735).

The spelling of 51102620 in words is "fifty-one million, one hundred two thousand, six hundred twenty".