1550713313 has 2 divisors, whose sum is σ = 1550713314. Its totient is φ = 1550713312.

The previous prime is 1550713301. The next prime is 1550713331. The reversal of 1550713313 is 3133170551.

It is a happy number.

Together with next prime (1550713331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1368112144 + 182601169 = 36988^2 + 13513^2 .

It is a cyclic number.

It is not a de Polignac number, because 1550713313 - 2¹⁸ = 1550451169 is a prime.

It is not a weakly prime, because it can be changed into another prime (1550713013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775356656 + 775356657.

It is an arithmetic number, because the mean of its divisors is an integer number (775356657).

Almost surely, 2^1550713313 is an apocalyptic number.

It is an amenable number.

1550713313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1550713313 is an equidigital number, since it uses as much as digits as its factorization.

1550713313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4725, while the sum is 29.

The square root of 1550713313 is about 39379.0974122059. The cubic root of 1550713313 is about 1157.4720297638.

Adding to 1550713313 its reverse (3133170551), we get a palindrome (4683883864).

The spelling of 1550713313 in words is "one billion, five hundred fifty million, seven hundred thirteen thousand, three hundred thirteen".