550717157 has 4 divisors (see below), whose sum is σ = 550843596. Its totient is φ = 550590720.

The previous prime is 550717127. The next prime is 550717187. The reversal of 550717157 is 751717055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 751717055 = 5 ⋅150343411.

It is an interprime number because it is at equal distance from previous prime (550717127) and next prime (550717187).

It can be written as a sum of positive squares in 2 ways, for example, as 146264836 + 404452321 = 12094^2 + 20111^2 .

It is a cyclic number.

It is not a de Polignac number, because 550717157 - 2⁶ = 550717093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 550717157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550717127) 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, 56444 + ... + 65477.

It is an arithmetic number, because the mean of its divisors is an integer number (137710899).

Almost surely, 2^550717157 is an apocalyptic number.

It is an amenable number.

550717157 is a deficient number, since it is larger than the sum of its proper divisors (126439).

550717157 is a wasteful number, since it uses less digits than its factorization.

550717157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126438.

The product of its (nonzero) digits is 42875, while the sum is 38.

The square root of 550717157 is about 23467.3636567894. The cubic root of 550717157 is about 819.6772262263.

The spelling of 550717157 in words is "five hundred fifty million, seven hundred seventeen thousand, one hundred fifty-seven".