521131106054 has 32 divisors (see below), whose sum is σ = 852816353760. Its totient is φ = 237392001792.

The previous prime is 521131106051. The next prime is 521131106063. The reversal of 521131106054 is 450601131125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521131106051) 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, 1086737 + ... + 1491059.

It is an arithmetic number, because the mean of its divisors is an integer number (26650511055).

Almost surely, 2^521131106054 is an apocalyptic number.

521131106054 is a deficient number, since it is larger than the sum of its proper divisors (331685247706).

521131106054 is a wasteful number, since it uses less digits than its factorization.

521131106054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404984.

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 521131106054 its reverse (450601131125), we get a palindrome (971732237179).

The spelling of 521131106054 in words is "five hundred twenty-one billion, one hundred thirty-one million, one hundred six thousand, fifty-four".