201541534 has 4 divisors (see below), whose sum is σ = 302312304. Its totient is φ = 100770766.

The previous prime is 201541519. The next prime is 201541573. The reversal of 201541534 is 435145102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 201541499 and 201541508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50385382 + ... + 50385385.

It is an arithmetic number, because the mean of its divisors is an integer number (75578076).

Almost surely, 2^201541534 is an apocalyptic number.

201541534 is a deficient number, since it is larger than the sum of its proper divisors (100770770).

201541534 is a wasteful number, since it uses less digits than its factorization.

201541534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100770769.

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

The square root of 201541534 is about 14196.5324639505. The cubic root of 201541534 is about 586.3021947731.

Adding to 201541534 its reverse (435145102), we get a palindrome (636686636).

The spelling of 201541534 in words is "two hundred one million, five hundred forty-one thousand, five hundred thirty-four".