51035645 has 8 divisors (see below), whose sum is σ = 61337304. Its totient is φ = 40765504.

The previous prime is 51035587. The next prime is 51035713. The reversal of 51035645 is 54653015.

It can be written as a sum of positive squares in 4 ways, for example, as 6666724 + 44368921 = 2582^2 + 6661^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51035645 - 2¹⁶ = 50970109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4154 + ... + 10923.

It is an arithmetic number, because the mean of its divisors is an integer number (7667163).

Almost surely, 2^51035645 is an apocalyptic number.

It is an amenable number.

51035645 is a deficient number, since it is larger than the sum of its proper divisors (10301659).

51035645 is a wasteful number, since it uses less digits than its factorization.

51035645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15759.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 51035645 is about 7143.9236418092. The cubic root of 51035645 is about 370.9293535246.

The spelling of 51035645 in words is "fifty-one million, thirty-five thousand, six hundred forty-five".