540331551 has 12 divisors (see below), whose sum is σ = 784567680. Its totient is φ = 358333920.

The previous prime is 540331529. The next prime is 540331637. The reversal of 540331551 is 155133045.

It is not a de Polignac number, because 540331551 - 2⁶ = 540331487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540331651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155446 + ... + 158883.

It is an arithmetic number, because the mean of its divisors is an integer number (65380640).

Almost surely, 2^540331551 is an apocalyptic number.

540331551 is a deficient number, since it is larger than the sum of its proper divisors (244236129).

540331551 is a wasteful number, since it uses less digits than its factorization.

540331551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314526 (or 314523 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 540331551 is about 23245.0328242401. The cubic root of 540331551 is about 814.4919115988.

Adding to 540331551 its reverse (155133045), we get a palindrome (695464596).

The spelling of 540331551 in words is "five hundred forty million, three hundred thirty-one thousand, five hundred fifty-one".