550157329 has 4 divisors (see below), whose sum is σ = 565026484. Its totient is φ = 535288176.

The previous prime is 550157323. The next prime is 550157357. The reversal of 550157329 is 923751055.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 923751055 = 5 ⋅184750211.

It can be written as a sum of positive squares in 2 ways, for example, as 191130625 + 359026704 = 13825^2 + 18948^2 .

It is not a de Polignac number, because 550157329 - 2⁵ = 550157297 is a prime.

It is a super-3 number, since 3×550157329³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 14869117 = 550157329 / (5 + 5 + 0 + 1 + 5 + 7 + 3 + 2 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550157323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7434522 + ... + 7434595.

It is an arithmetic number, because the mean of its divisors is an integer number (141256621).

Almost surely, 2^550157329 is an apocalyptic number.

It is an amenable number.

550157329 is a deficient number, since it is larger than the sum of its proper divisors (14869155).

550157329 is a wasteful number, since it uses less digits than its factorization.

550157329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14869154.

The product of its (nonzero) digits is 47250, while the sum is 37.

The square root of 550157329 is about 23455.4328248276. The cubic root of 550157329 is about 819.3993861807.

The spelling of 550157329 in words is "five hundred fifty million, one hundred fifty-seven thousand, three hundred twenty-nine".