51234805 has 8 divisors (see below), whose sum is σ = 61520472. Its totient is φ = 40962048.

The previous prime is 51234803. The next prime is 51234829. The reversal of 51234805 is 50843215.

It can be written as a sum of positive squares in 4 ways, for example, as 412164 + 50822641 = 642^2 + 7129^2 .

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 51234805 - 2¹ = 51234803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51234803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12357 + ... + 15973.

It is an arithmetic number, because the mean of its divisors is an integer number (7690059).

Almost surely, 2^51234805 is an apocalyptic number.

It is an amenable number.

51234805 is a deficient number, since it is larger than the sum of its proper divisors (10285667).

51234805 is a wasteful number, since it uses less digits than its factorization.

51234805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6455.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 51234805 is about 7157.8491881291. The cubic root of 51234805 is about 371.4112285154.

The spelling of 51234805 in words is "fifty-one million, two hundred thirty-four thousand, eight hundred five".