51234745 has 8 divisors (see below), whose sum is σ = 61801416. Its totient is φ = 40774656.

The previous prime is 51234713. The next prime is 51234761. The reversal of 51234745 is 54743215.

It can be written as a sum of positive squares in 4 ways, for example, as 5212089 + 46022656 = 2283^2 + 6784^2 .

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 51234745 - 2⁵ = 51234713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25582 + ... + 27511.

It is an arithmetic number, because the mean of its divisors is an integer number (7725177).

Almost surely, 2^51234745 is an apocalyptic number.

It is an amenable number.

51234745 is a deficient number, since it is larger than the sum of its proper divisors (10566671).

51234745 is a wasteful number, since it uses less digits than its factorization.

51234745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53291.

The product of its digits is 16800, while the sum is 31.

The square root of 51234745 is about 7157.8449969247. The cubic root of 51234745 is about 371.4110835314.

The spelling of 51234745 in words is "fifty-one million, two hundred thirty-four thousand, seven hundred forty-five".