540511553 has 4 divisors (see below), whose sum is σ = 540783408. Its totient is φ = 540239700.

The previous prime is 540511537. The next prime is 540511561. The reversal of 540511553 is 355115045.

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 540511553 - 2⁴ = 540511537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540511513) 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, 132923 + ... + 136928.

It is an arithmetic number, because the mean of its divisors is an integer number (135195852).

Almost surely, 2^540511553 is an apocalyptic number.

It is an amenable number.

540511553 is a deficient number, since it is larger than the sum of its proper divisors (271855).

540511553 is a wasteful number, since it uses less digits than its factorization.

540511553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271854.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 540511553 is about 23248.9043397748. The cubic root of 540511553 is about 814.5823461327.

Adding to 540511553 its reverse (355115045), we get a palindrome (895626598).

The spelling of 540511553 in words is "five hundred forty million, five hundred eleven thousand, five hundred fifty-three".