201020477 has 16 divisors (see below), whose sum is σ = 233418240. Its totient is φ = 169558272.

The previous prime is 201020471. The next prime is 201020527. The reversal of 201020477 is 774020102.

It is a cyclic number.

It is not a de Polignac number, because 201020477 - 2¹⁸ = 200758333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020471) 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, 327623 + ... + 328235.

It is an arithmetic number, because the mean of its divisors is an integer number (14588640).

Almost surely, 2^201020477 is an apocalyptic number.

It is an amenable number.

201020477 is a deficient number, since it is larger than the sum of its proper divisors (32397763).

201020477 is an equidigital number, since it uses as much as digits as its factorization.

201020477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 201020477 is about 14178.1690284747. The cubic root of 201020477 is about 585.7964917081.

Adding to 201020477 its reverse (774020102), we get a palindrome (975040579).

The spelling of 201020477 in words is "two hundred one million, twenty thousand, four hundred seventy-seven".