1550545226 has 4 divisors (see below), whose sum is σ = 2325817842. Its totient is φ = 775272612.

The previous prime is 1550545219. The next prime is 1550545229. The reversal of 1550545226 is 6225450551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6225450551 = 257 ⋅24223543.

It can be written as a sum of positive squares in only one way, i.e., 1039740025 + 510805201 = 32245^2 + 22601^2 .

It is not an unprimeable number, because it can be changed into a prime (1550545229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387636305 + ... + 387636308.

Almost surely, 2^1550545226 is an apocalyptic number.

1550545226 is a deficient number, since it is larger than the sum of its proper divisors (775272616).

1550545226 is an equidigital number, since it uses as much as digits as its factorization.

1550545226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775272615.

The product of its (nonzero) digits is 60000, while the sum is 35.

The square root of 1550545226 is about 39376.9631383630. The cubic root of 1550545226 is about 1157.4302074985.

Adding to 1550545226 its reverse (6225450551), we get a palindrome (7775995777).

The spelling of 1550545226 in words is "one billion, five hundred fifty million, five hundred forty-five thousand, two hundred twenty-six".