149999503 has 2 divisors, whose sum is σ = 149999504. Its totient is φ = 149999502.

The previous prime is 149999501. The next prime is 149999561. The reversal of 149999503 is 305999941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149999503 - 2¹ = 149999501 is a prime.

Together with 149999501, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149999501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74999751 + 74999752.

It is an arithmetic number, because the mean of its divisors is an integer number (74999752).

Almost surely, 2^149999503 is an apocalyptic number.

149999503 is a deficient number, since it is larger than the sum of its proper divisors (1).

149999503 is an equidigital number, since it uses as much as digits as its factorization.

149999503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 393660, while the sum is 49.

The square root of 149999503 is about 12247.4284239590. The cubic root of 149999503 is about 531.3286977670.

The spelling of 149999503 in words is "one hundred forty-nine million, nine hundred ninety-nine thousand, five hundred three".