51490503 has 12 divisors (see below), whose sum is σ = 74567688. Its totient is φ = 34238160.

The previous prime is 51490493. The next prime is 51490519. The reversal of 51490503 is 30509415.

It is not a de Polignac number, because 51490503 - 2⁵ = 51490471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51492503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3633 + ... + 10778.

It is an arithmetic number, because the mean of its divisors is an integer number (6213974).

Almost surely, 2^51490503 is an apocalyptic number.

51490503 is a deficient number, since it is larger than the sum of its proper divisors (23077185).

51490503 is a wasteful number, since it uses less digits than its factorization.

51490503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14814 (or 14811 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 51490503 is about 7175.6883293521. The cubic root of 51490503 is about 372.0280719364.

Adding to 51490503 its reverse (30509415), we get a palindrome (81999918).

The spelling of 51490503 in words is "fifty-one million, four hundred ninety thousand, five hundred three".