51023345 has 4 divisors (see below), whose sum is σ = 61228020. Its totient is φ = 40818672.

The previous prime is 51023339. The next prime is 51023347. The reversal of 51023345 is 54332015.

51023345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54332015 = 5 ⋅10866403.

It can be written as a sum of positive squares in 2 ways, for example, as 15358561 + 35664784 = 3919^2 + 5972^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51023345 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51023345.

It is not an unprimeable number, because it can be changed into a prime (51023347) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5102330 + ... + 5102339.

It is an arithmetic number, because the mean of its divisors is an integer number (15307005).

Almost surely, 2^51023345 is an apocalyptic number.

It is an amenable number.

51023345 is a deficient number, since it is larger than the sum of its proper divisors (10204675).

51023345 is a wasteful number, since it uses less digits than its factorization.

51023345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10204674.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 51023345 is about 7143.0627184703. The cubic root of 51023345 is about 370.8995521468.

The spelling of 51023345 in words is "fifty-one million, twenty-three thousand, three hundred forty-five".