201531550454 has 32 divisors (see below), whose sum is σ = 328316620800. Its totient is φ = 92225280672.

The previous prime is 201531550397. The next prime is 201531550459. The reversal of 201531550454 is 454055135102.

201531550454 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201531550454² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201531550459) 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, 5592137 + ... + 5628059.

It is an arithmetic number, because the mean of its divisors is an integer number (10259894400).

Almost surely, 2^201531550454 is an apocalyptic number.

201531550454 is a deficient number, since it is larger than the sum of its proper divisors (126785070346).

201531550454 is a wasteful number, since it uses less digits than its factorization.

201531550454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37764.

The product of its (nonzero) digits is 60000, while the sum is 35.

Adding to 201531550454 its reverse (454055135102), we get a palindrome (655586685556).

The spelling of 201531550454 in words is "two hundred one billion, five hundred thirty-one million, five hundred fifty thousand, four hundred fifty-four".