541215551 has 4 divisors (see below), whose sum is σ = 569700600. Its totient is φ = 512730504.

The previous prime is 541215547. The next prime is 541215557. The reversal of 541215551 is 155512145.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155512145 = 5 ⋅31102429.

It is not a de Polignac number, because 541215551 - 2² = 541215547 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 (541215557) 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 3 ways as a sum of consecutive naturals, for example, 14242496 + ... + 14242533.

It is an arithmetic number, because the mean of its divisors is an integer number (142425150).

Almost surely, 2^541215551 is an apocalyptic number.

541215551 is a deficient number, since it is larger than the sum of its proper divisors (28485049).

541215551 is a wasteful number, since it uses less digits than its factorization.

541215551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28485048.

The product of its digits is 5000, while the sum is 29.

The square root of 541215551 is about 23264.0398684321. The cubic root of 541215551 is about 814.9358480123.

Adding to 541215551 its reverse (155512145), we get a palindrome (696727696).

The spelling of 541215551 in words is "five hundred forty-one million, two hundred fifteen thousand, five hundred fifty-one".