1365145553 has 16 divisors (see below), whose sum is σ = 1435275072. Its totient is φ = 1296960000.

The previous prime is 1365145541. The next prime is 1365145589. The reversal of 1365145553 is 3555415631.

It is a cyclic number.

It is not a de Polignac number, because 1365145553 - 2⁸ = 1365145297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1365145253) 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, 705998 + ... + 707928.

It is an arithmetic number, because the mean of its divisors is an integer number (89704692).

Almost surely, 2^1365145553 is an apocalyptic number.

It is an amenable number.

1365145553 is a deficient number, since it is larger than the sum of its proper divisors (70129519).

1365145553 is a wasteful number, since it uses less digits than its factorization.

1365145553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2416.

The product of its digits is 135000, while the sum is 38.

The square root of 1365145553 is about 36947.8761635902. The cubic root of 1365145553 is about 1109.3271774061.

The spelling of 1365145553 in words is "one billion, three hundred sixty-five million, one hundred forty-five thousand, five hundred fifty-three".