51347786 has 60 divisors (see below), whose sum is σ = 98029398. Its totient is φ = 20151936.

The previous prime is 51347783. The next prime is 51347797. The reversal of 51347786 is 68774315.

It can be written as a sum of positive squares in 3 ways, for example, as 50481025 + 866761 = 7105^2 + 931^2 .

Its product of digits (141120) is a multiple of the sum of its prime divisors (63).

It is not an unprimeable number, because it can be changed into a prime (51347783) by changing a digit.

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 29 ways as a sum of consecutive naturals, for example, 1387760 + ... + 1387796.

Almost surely, 2^51347786 is an apocalyptic number.

51347786 is a deficient number, since it is larger than the sum of its proper divisors (46681612).

51347786 is an equidigital number, since it uses as much as digits as its factorization.

51347786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 63 counting only the distinct ones).

The product of its digits is 141120, while the sum is 41.

The square root of 51347786 is about 7165.7369474465. The cubic root of 51347786 is about 371.6840352862.

The spelling of 51347786 in words is "fifty-one million, three hundred forty-seven thousand, seven hundred eighty-six".