51023703 has 16 divisors (see below), whose sum is σ = 70394240. Its totient is φ = 32848416.

The previous prime is 51023701. The next prime is 51023711. The reversal of 51023703 is 30732015.

It is a happy number.

It is not a de Polignac number, because 51023703 - 2¹ = 51023701 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51023703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51023701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13776 + ... + 17082.

It is an arithmetic number, because the mean of its divisors is an integer number (4399640).

Almost surely, 2^51023703 is an apocalyptic number.

51023703 is a deficient number, since it is larger than the sum of its proper divisors (19370537).

51023703 is a wasteful number, since it uses less digits than its factorization.

51023703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 51023703 is about 7143.0877777051. The cubic root of 51023703 is about 370.9004196041.

Adding to 51023703 its reverse (30732015), we get a palindrome (81755718).

The spelling of 51023703 in words is "fifty-one million, twenty-three thousand, seven hundred three".