540740457 has 6 divisors (see below), whose sum is σ = 781069562. Its totient is φ = 360493632.

The previous prime is 540740429. The next prime is 540740479. The reversal of 540740457 is 754047045.

540740457 is a `hidden beast` number, since 540 + 74 + 0 + 45 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 277522281 + 263218176 = 16659^2 + 16224^2 .

It is not a de Polignac number, because 540740457 - 2⁶ = 540740393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540740257) 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 5 ways as a sum of consecutive naturals, for example, 30041128 + ... + 30041145.

Almost surely, 2^540740457 is an apocalyptic number.

It is an amenable number.

540740457 is a deficient number, since it is larger than the sum of its proper divisors (240329105).

540740457 is a wasteful number, since it uses less digits than its factorization.

540740457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60082279 (or 60082276 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 36.

The square root of 540740457 is about 23253.8267173384. The cubic root of 540740457 is about 814.6973204508.

The spelling of 540740457 in words is "five hundred forty million, seven hundred forty thousand, four hundred fifty-seven".