201145534 has 16 divisors (see below), whose sum is σ = 318827520. Its totient is φ = 94980600.

The previous prime is 201145523. The next prime is 201145541. The reversal of 201145534 is 435541102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201145499 and 201145508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24042 + ... + 31309.

It is an arithmetic number, because the mean of its divisors is an integer number (19926720).

Almost surely, 2^201145534 is an apocalyptic number.

201145534 is a deficient number, since it is larger than the sum of its proper divisors (117681986).

201145534 is a wasteful number, since it uses less digits than its factorization.

201145534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55455.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 201145534 is about 14182.5785384746. The cubic root of 201145534 is about 585.9179432913.

Adding to 201145534 its reverse (435541102), we get a palindrome (636686636).

The spelling of 201145534 in words is "two hundred one million, one hundred forty-five thousand, five hundred thirty-four".