541721397531 has 8 divisors (see below), whose sum is σ = 733075722304. Its totient is φ = 355757335560.

The previous prime is 541721397523. The next prime is 541721397631. The reversal of 541721397531 is 135793127145.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 541721397531 - 2³ = 541721397523 is a prime.

It is a super-2 number, since 2×541721397531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (541721397031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1347565465 + ... + 1347565866.

It is an arithmetic number, because the mean of its divisors is an integer number (91634465288).

Almost surely, 2^541721397531 is an apocalyptic number.

541721397531 is a deficient number, since it is larger than the sum of its proper divisors (191354324773).

541721397531 is a wasteful number, since it uses less digits than its factorization.

541721397531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2695131401.

The product of its digits is 793800, while the sum is 48.

The spelling of 541721397531 in words is "five hundred forty-one billion, seven hundred twenty-one million, three hundred ninety-seven thousand, five hundred thirty-one".