503105149 has 2 divisors, whose sum is σ = 503105150. Its totient is φ = 503105148.

The previous prime is 503105111. The next prime is 503105159. The reversal of 503105149 is 941501305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 280797049 + 222308100 = 16757^2 + 14910^2 .

It is a cyclic number.

It is not a de Polignac number, because 503105149 - 2¹⁷ = 502974077 is a prime.

It is a super-2 number, since 2×503105149² = 506229581900624402, which contains 22 as substring.

It is equal to p_26510455 and since 503105149 and 26510455 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503105159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251552574 + 251552575.

It is an arithmetic number, because the mean of its divisors is an integer number (251552575).

Almost surely, 2^503105149 is an apocalyptic number.

It is an amenable number.

503105149 is a deficient number, since it is larger than the sum of its proper divisors (1).

503105149 is an equidigital number, since it uses as much as digits as its factorization.

503105149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 503105149 is about 22430.0055506012. The cubic root of 503105149 is about 795.3401753465.

The spelling of 503105149 in words is "five hundred three million, one hundred five thousand, one hundred forty-nine".