1345550553 has 6 divisors (see below), whose sum is σ = 1943573034. Its totient is φ = 897033696.

The previous prime is 1345550483. The next prime is 1345550579. The reversal of 1345550553 is 3550555431.

1345550553 is a `hidden beast` number, since 1 + 3 + 4 + 55 + 50 + 553 = 666.

It can be written as a sum of positive squares in only one way, i.e., 857494089 + 488056464 = 29283^2 + 22092^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1345550553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1345550593) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74752800 + ... + 74752817.

It is an arithmetic number, because the mean of its divisors is an integer number (323928839).

Almost surely, 2^1345550553 is an apocalyptic number.

It is an amenable number.

1345550553 is a deficient number, since it is larger than the sum of its proper divisors (598022481).

1345550553 is a wasteful number, since it uses less digits than its factorization.

1345550553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149505623 (or 149505620 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 36.

The square root of 1345550553 is about 36681.7468640740. The cubic root of 1345550553 is about 1103.9938981429.

The spelling of 1345550553 in words is "one billion, three hundred forty-five million, five hundred fifty thousand, five hundred fifty-three".