51480503 has 4 divisors (see below), whose sum is σ = 52677768. Its totient is φ = 50283240.

The previous prime is 51480497. The next prime is 51480521. The reversal of 51480503 is 30508415.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51480503 - 2⁶ = 51480439 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 (51480103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598568 + ... + 598653.

It is an arithmetic number, because the mean of its divisors is an integer number (13169442).

Almost surely, 2^51480503 is an apocalyptic number.

51480503 is a deficient number, since it is larger than the sum of its proper divisors (1197265).

51480503 is a wasteful number, since it uses less digits than its factorization.

51480503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197264.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 51480503 is about 7174.9914982528. The cubic root of 51480503 is about 372.0039864490.

Adding to 51480503 its reverse (30508415), we get a palindrome (81988918).

The spelling of 51480503 in words is "fifty-one million, four hundred eighty thousand, five hundred three".