531145534201 has 4 divisors (see below), whose sum is σ = 562389389172. Its totient is φ = 499901679232.

The previous prime is 531145534189. The next prime is 531145534217. The reversal of 531145534201 is 102435541135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102435541135 = 5 ⋅20487108227.

It can be written as a sum of positive squares in 2 ways, for example, as 146001174201 + 385144360000 = 382101^2 + 620600^2 .

It is a cyclic number.

It is not a de Polignac number, because 531145534201 - 2⁵ = 531145534169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531145534501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15621927460 + ... + 15621927493.

It is an arithmetic number, because the mean of its divisors is an integer number (140597347293).

Almost surely, 2^531145534201 is an apocalyptic number.

It is an amenable number.

531145534201 is a deficient number, since it is larger than the sum of its proper divisors (31243854971).

531145534201 is a wasteful number, since it uses less digits than its factorization.

531145534201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31243854970.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 531145534201 in words is "five hundred thirty-one billion, one hundred forty-five million, five hundred thirty-four thousand, two hundred one".