540254551 has 4 divisors (see below), whose sum is σ = 540800704. Its totient is φ = 539708400.

The previous prime is 540254513. The next prime is 540254591. The reversal of 540254551 is 155452045.

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 540254551 - 2¹⁵ = 540221783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540254591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271590 + ... + 273571.

It is an arithmetic number, because the mean of its divisors is an integer number (135200176).

Almost surely, 2^540254551 is an apocalyptic number.

540254551 is a deficient number, since it is larger than the sum of its proper divisors (546153).

540254551 is an equidigital number, since it uses as much as digits as its factorization.

540254551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546152.

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 540254551 is about 23243.3764974024. The cubic root of 540254551 is about 814.4532200112.

The spelling of 540254551 in words is "five hundred forty million, two hundred fifty-four thousand, five hundred fifty-one".