543400451 has 4 divisors (see below), whose sum is σ = 592800504. Its totient is φ = 494000400.

The previous prime is 543400441. The next prime is 543400453. The reversal of 543400451 is 154004345.

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 543400451 - 2¹⁴ = 543384067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 543400451.

It is not an unprimeable number, because it can be changed into a prime (543400453) 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, 24700010 + ... + 24700031.

It is an arithmetic number, because the mean of its divisors is an integer number (148200126).

Almost surely, 2^543400451 is an apocalyptic number.

543400451 is a deficient number, since it is larger than the sum of its proper divisors (49400053).

543400451 is a wasteful number, since it uses less digits than its factorization.

543400451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49400052.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 543400451 is about 23310.9513104892. The cubic root of 543400451 is about 816.0310140357.

Adding to 543400451 its reverse (154004345), we get a palindrome (697404796).

The spelling of 543400451 in words is "five hundred forty-three million, four hundred thousand, four hundred fifty-one".