545536553 has 4 divisors (see below), whose sum is σ = 547464528. Its totient is φ = 543608580.

The previous prime is 545536549. The next prime is 545536559. The reversal of 545536553 is 355635545.

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 545536553 - 2² = 545536549 is a prime.

It is a super-2 number, since 2×545536553² = 595220261318243618, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 545536553.

It is not an unprimeable number, because it can be changed into a prime (545536559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 963563 + ... + 964128.

It is an arithmetic number, because the mean of its divisors is an integer number (136866132).

Almost surely, 2^545536553 is an apocalyptic number.

It is an amenable number.

545536553 is a deficient number, since it is larger than the sum of its proper divisors (1927975).

545536553 is a wasteful number, since it uses less digits than its factorization.

545536553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927974.

The product of its digits is 675000, while the sum is 41.

The square root of 545536553 is about 23356.7239355180. The cubic root of 545536553 is about 817.0988860401.

The spelling of 545536553 in words is "five hundred forty-five million, five hundred thirty-six thousand, five hundred fifty-three".