540461551 has 4 divisors (see below), whose sum is σ = 617670352. Its totient is φ = 463252752.

The previous prime is 540461477. The next prime is 540461557. The reversal of 540461551 is 155164045.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155164045 = 5 ⋅31032809.

It is a cyclic number.

It is not a de Polignac number, because 540461551 - 2¹³ = 540453359 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 (540461557) 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, 38604390 + ... + 38604403.

It is an arithmetic number, because the mean of its divisors is an integer number (154417588).

Almost surely, 2^540461551 is an apocalyptic number.

540461551 is a deficient number, since it is larger than the sum of its proper divisors (77208801).

540461551 is an equidigital number, since it uses as much as digits as its factorization.

540461551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77208800.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 540461551 is about 23247.8289523990. The cubic root of 540461551 is about 814.5572267174.

The spelling of 540461551 in words is "five hundred forty million, four hundred sixty-one thousand, five hundred fifty-one".