51023305 has 8 divisors (see below), whose sum is σ = 61266312. Its totient is φ = 40793088.

The previous prime is 51023293. The next prime is 51023309. The reversal of 51023305 is 50332015.

It can be written as a sum of positive squares in 4 ways, for example, as 38576521 + 12446784 = 6211^2 + 3528^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51023305 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51023309) 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, 14059 + ... + 17311.

It is an arithmetic number, because the mean of its divisors is an integer number (7658289).

Almost surely, 2^51023305 is an apocalyptic number.

It is an amenable number.

51023305 is a deficient number, since it is larger than the sum of its proper divisors (10243007).

51023305 is a wasteful number, since it uses less digits than its factorization.

51023305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6395.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 51023305 is about 7143.0599185503. The cubic root of 51023305 is about 370.8994552239.

The spelling of 51023305 in words is "fifty-one million, twenty-three thousand, three hundred five".