545450431 has 4 divisors (see below), whose sum is σ = 545562864. Its totient is φ = 545338000.

The previous prime is 545450407. The next prime is 545450449. The reversal of 545450431 is 134054545.

It is a happy number.

545450431 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 a cyclic number.

It is not a de Polignac number, because 545450431 - 2²³ = 537061823 is a prime.

It is a super-2 number, since 2×545450431² = 595032345356171522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 545450393 and 545450402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545420431) 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, 48595 + ... + 58756.

It is an arithmetic number, because the mean of its divisors is an integer number (136390716).

Almost surely, 2^545450431 is an apocalyptic number.

545450431 is a deficient number, since it is larger than the sum of its proper divisors (112433).

545450431 is a wasteful number, since it uses less digits than its factorization.

545450431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112432.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 545450431 is about 23354.8802394703. The cubic root of 545450431 is about 817.0558862367.

The spelling of 545450431 in words is "five hundred forty-five million, four hundred fifty thousand, four hundred thirty-one".