550513257 has 16 divisors (see below), whose sum is σ = 875351040. Its totient is φ = 300901392.

The previous prime is 550513241. The next prime is 550513289. The reversal of 550513257 is 752315055.

It is not a de Polignac number, because 550513257 - 2⁴ = 550513241 is a prime.

It is a super-2 number, since 2×550513257² = 606129692265496098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (550513237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 569407 + ... + 570372.

It is an arithmetic number, because the mean of its divisors is an integer number (54709440).

Almost surely, 2^550513257 is an apocalyptic number.

It is an amenable number.

550513257 is a deficient number, since it is larger than the sum of its proper divisors (324837783).

550513257 is a wasteful number, since it uses less digits than its factorization.

550513257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139812.

The product of its (nonzero) digits is 26250, while the sum is 33.

The square root of 550513257 is about 23463.0189234037. The cubic root of 550513257 is about 819.5760534100.

The spelling of 550513257 in words is "five hundred fifty million, five hundred thirteen thousand, two hundred fifty-seven".