51037645 has 8 divisors (see below), whose sum is σ = 61284600. Its totient is φ = 40803840.

The previous prime is 51037631. The next prime is 51037669. The reversal of 51037645 is 54673015.

51037645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1841449 + 49196196 = 1357^2 + 7014^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51037645 - 2¹⁹ = 50513357 is a prime.

It is a super-3 number, since 3×51037645³ (a number of 24 digits) contains 333 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 7 ways as a sum of consecutive naturals, for example, 10581 + ... + 14629.

It is an arithmetic number, because the mean of its divisors is an integer number (7660575).

Almost surely, 2^51037645 is an apocalyptic number.

It is an amenable number.

51037645 is a deficient number, since it is larger than the sum of its proper divisors (10246955).

51037645 is a wasteful number, since it uses less digits than its factorization.

51037645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6575.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 51037645 is about 7144.0636195376. The cubic root of 51037645 is about 370.9341988245.

The spelling of 51037645 in words is "fifty-one million, thirty-seven thousand, six hundred forty-five".