545133631 has 4 divisors (see below), whose sum is σ = 623009872. Its totient is φ = 467257392.

The previous prime is 545133623. The next prime is 545133643. The reversal of 545133631 is 136331545.

545133631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 545133631 - 2³ = 545133623 is a prime.

It is a super-2 number, since 2×545133631² = 594341351294488322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 545133593 and 545133602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545133671) 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, 38938110 + ... + 38938123.

It is an arithmetic number, because the mean of its divisors is an integer number (155752468).

Almost surely, 2^545133631 is an apocalyptic number.

545133631 is a deficient number, since it is larger than the sum of its proper divisors (77876241).

545133631 is an equidigital number, since it uses as much as digits as its factorization.

545133631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77876240.

The product of its digits is 16200, while the sum is 31.

The square root of 545133631 is about 23348.0969460040. The cubic root of 545133631 is about 816.8976723895.

The spelling of 545133631 in words is "five hundred forty-five million, one hundred thirty-three thousand, six hundred thirty-one".