545235787531 has 4 divisors (see below), whose sum is σ = 545241118864. Its totient is φ = 545230456200.

The previous prime is 545235787493. The next prime is 545235787549. The reversal of 545235787531 is 135787532545.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 545235787531 - 2²³ = 545227398923 is a prime.

It is a super-2 number, since 2×545235787531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545235787571) 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, 2509200 + ... + 2717821.

It is an arithmetic number, because the mean of its divisors is an integer number (136310279716).

Almost surely, 2^545235787531 is an apocalyptic number.

545235787531 is a deficient number, since it is larger than the sum of its proper divisors (5331333).

545235787531 is a wasteful number, since it uses less digits than its factorization.

545235787531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5331332.

The product of its digits is 17640000, while the sum is 55.

The spelling of 545235787531 in words is "five hundred forty-five billion, two hundred thirty-five million, seven hundred eighty-seven thousand, five hundred thirty-one".