549749503 has 2 divisors, whose sum is σ = 549749504. Its totient is φ = 549749502.

The previous prime is 549749479. The next prime is 549749509. The reversal of 549749503 is 305947945.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-549749503 is a prime.

It is a super-3 number, since 3×549749503³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549749509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274874751 + 274874752.

It is an arithmetic number, because the mean of its divisors is an integer number (274874752).

Almost surely, 2^549749503 is an apocalyptic number.

549749503 is a deficient number, since it is larger than the sum of its proper divisors (1).

549749503 is an equidigital number, since it uses as much as digits as its factorization.

549749503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680400, while the sum is 46.

The square root of 549749503 is about 23446.7375768997. The cubic root of 549749503 is about 819.1968653360.

The spelling of 549749503 in words is "five hundred forty-nine million, seven hundred forty-nine thousand, five hundred three".