1373250553 has 4 divisors (see below), whose sum is σ = 1374022528. Its totient is φ = 1372478580.

The previous prime is 1373250551. The next prime is 1373250563. The reversal of 1373250553 is 3550523731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1373250553 - 2¹ = 1373250551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1373250551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383313 + ... + 386878.

It is an arithmetic number, because the mean of its divisors is an integer number (343505632).

Almost surely, 2^1373250553 is an apocalyptic number.

It is an amenable number.

1373250553 is a deficient number, since it is larger than the sum of its proper divisors (771975).

1373250553 is an equidigital number, since it uses as much as digits as its factorization.

1373250553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771974.

The product of its (nonzero) digits is 47250, while the sum is 34.

The square root of 1373250553 is about 37057.3953887750. The cubic root of 1373250553 is about 1111.5182408534.

The spelling of 1373250553 in words is "one billion, three hundred seventy-three million, two hundred fifty thousand, five hundred fifty-three".