55001503 has 2 divisors, whose sum is σ = 55001504. Its totient is φ = 55001502.

The previous prime is 55001497. The next prime is 55001519. The reversal of 55001503 is 30510055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55001503 - 2¹³ = 54993311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55001593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27500751 + 27500752.

It is an arithmetic number, because the mean of its divisors is an integer number (27500752).

Almost surely, 2^55001503 is an apocalyptic number.

55001503 is a deficient number, since it is larger than the sum of its proper divisors (1).

55001503 is an equidigital number, since it uses as much as digits as its factorization.

55001503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 375, while the sum is 19.

The square root of 55001503 is about 7416.2998186427. The cubic root of 55001503 is about 380.2987101886.

Adding to 55001503 its reverse (30510055), we get a palindrome (85511558).

The spelling of 55001503 in words is "fifty-five million, one thousand, five hundred three".