540256477 has 4 divisors (see below), whose sum is σ = 540787680. Its totient is φ = 539725276.

The previous prime is 540256471. The next prime is 540256487. The reversal of 540256477 is 774652045.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 540256477 - 2¹⁹ = 539732189 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 (540256471) 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, 264073 + ... + 266110.

It is an arithmetic number, because the mean of its divisors is an integer number (135196920).

Almost surely, 2^540256477 is an apocalyptic number.

It is an amenable number.

540256477 is a deficient number, since it is larger than the sum of its proper divisors (531203).

540256477 is a wasteful number, since it uses less digits than its factorization.

540256477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531202.

The product of its (nonzero) digits is 235200, while the sum is 40.

The square root of 540256477 is about 23243.4179285233. The cubic root of 540256477 is about 814.4541878482.

The spelling of 540256477 in words is "five hundred forty million, two hundred fifty-six thousand, four hundred seventy-seven".