540415551 has 16 divisors (see below), whose sum is σ = 802740960. Its totient is φ = 321095040.

The previous prime is 540415523. The next prime is 540415583. The reversal of 540415551 is 155514045.

It is not a de Polignac number, because 540415551 - 2¹⁵ = 540382783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540410551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237780 + ... + 240041.

It is an arithmetic number, because the mean of its divisors is an integer number (50171310).

Almost surely, 2^540415551 is an apocalyptic number.

540415551 is a deficient number, since it is larger than the sum of its proper divisors (262325409).

540415551 is a wasteful number, since it uses less digits than its factorization.

540415551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477866.

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 540415551 is about 23246.8395916520. The cubic root of 540415551 is about 814.5341164113.

Adding to 540415551 its reverse (155514045), we get a palindrome (695929596).

The spelling of 540415551 in words is "five hundred forty million, four hundred fifteen thousand, five hundred fifty-one".