550521240 has 32 divisors (see below), whose sum is σ = 1651564080. Its totient is φ = 146805632.

The previous prime is 550521221. The next prime is 550521247. The reversal of 550521240 is 42125055.

It is a happy number.

It is a super-2 number, since 2×550521240² = 606147271382275200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 550521240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550521247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2293719 + ... + 2293958.

Almost surely, 2^550521240 is an apocalyptic number.

It is an amenable number.

550521240 is an abundant number, since it is smaller than the sum of its proper divisors (1101042840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

550521240 is a wasteful number, since it uses less digits than its factorization.

550521240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4587691 (or 4587687 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 550521240 is about 23463.1890415604. The cubic root of 550521240 is about 819.5800149519.

Adding to 550521240 its reverse (42125055), we get a palindrome (592646295).

The spelling of 550521240 in words is "five hundred fifty million, five hundred twenty-one thousand, two hundred forty".