51062780 has 12 divisors (see below), whose sum is σ = 107231880. Its totient is φ = 20425104.

The previous prime is 51062773. The next prime is 51062807. The reversal of 51062780 is 8726015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1276550 + ... + 1276589.

It is an arithmetic number, because the mean of its divisors is an integer number (8935990).

Almost surely, 2^51062780 is an apocalyptic number.

It is an amenable number.

51062780 is an abundant number, since it is smaller than the sum of its proper divisors (56169100).

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

51062780 is a wasteful number, since it uses less digits than its factorization.

51062780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553148 (or 2553146 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 51062780 is about 7145.8225558714. The cubic root of 51062780 is about 370.9950813422.

Adding to 51062780 its reverse (8726015), we get a palindrome (59788795).

The spelling of 51062780 in words is "fifty-one million, sixty-two thousand, seven hundred eighty".