1355550645 has 16 divisors (see below), whose sum is σ = 2175730560. Its totient is φ = 720677184.

The previous prime is 1355550643. The next prime is 1355550659. The reversal of 1355550645 is 5460555531.

It is not a de Polignac number, because 1355550645 - 2¹ = 1355550643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355550643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137785 + ... + 147294.

It is an arithmetic number, because the mean of its divisors is an integer number (135983160).

Almost surely, 2^1355550645 is an apocalyptic number.

1355550645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1355550645 is a deficient number, since it is larger than the sum of its proper divisors (820179915).

1355550645 is a wasteful number, since it uses less digits than its factorization.

1355550645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285404.

The product of its (nonzero) digits is 225000, while the sum is 39.

The square root of 1355550645 is about 36817.8033701089. The cubic root of 1355550645 is about 1106.7221006469.

The spelling of 1355550645 in words is "one billion, three hundred fifty-five million, five hundred fifty thousand, six hundred forty-five".