545401231 has 16 divisors (see below), whose sum is σ = 590054400. Its totient is φ = 502574688.

The previous prime is 545401223. The next prime is 545401237. The reversal of 545401231 is 132104545.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 545401231 - 2³ = 545401223 is a prime.

It is a super-2 number, since 2×545401231² = 594925005552630722, 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 = 545401196 and 545401205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545401237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 524410 + ... + 525448.

It is an arithmetic number, because the mean of its divisors is an integer number (36878400).

Almost surely, 2^545401231 is an apocalyptic number.

545401231 is a deficient number, since it is larger than the sum of its proper divisors (44653169).

545401231 is a wasteful number, since it uses less digits than its factorization.

545401231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 545401231 is about 23353.8269026727. The cubic root of 545401231 is about 817.0313191657.

Adding to 545401231 its reverse (132104545), we get a palindrome (677505776).

The spelling of 545401231 in words is "five hundred forty-five million, four hundred one thousand, two hundred thirty-one".