51351556 has 9 divisors (see below), whose sum is σ = 89890311. Its totient is φ = 25668612.

The previous prime is 51351551. The next prime is 51351563. The reversal of 51351556 is 65515315.

The square root of 51351556 is 7166.

It is a perfect power (a square), and thus also a powerful number.

It is a super-3 number, since 3×51351556³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51351551) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 12541 + ... + 16123.

Almost surely, 2^51351556 is an apocalyptic number.

51351556 is the 7166-th square number.

It is an amenable number.

51351556 is a deficient number, since it is larger than the sum of its proper divisors (38538755).

51351556 is an frugal number, since it uses more digits than its factorization.

51351556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7170 (or 3585 counting only the distinct ones).

The product of its digits is 11250, while the sum is 31.

The cubic root of 51351556 is about 371.6931315208.

The spelling of 51351556 in words is "fifty-one million, three hundred fifty-one thousand, five hundred fifty-six".