201561862 has 32 divisors (see below), whose sum is σ = 316864224. Its totient is φ = 96096000.

The previous prime is 201561817. The next prime is 201561869. The reversal of 201561862 is 268165102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201561869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 717162 + ... + 717442.

It is an arithmetic number, because the mean of its divisors is an integer number (9902007).

Almost surely, 2^201561862 is an apocalyptic number.

201561862 is a deficient number, since it is larger than the sum of its proper divisors (115302362).

201561862 is a wasteful number, since it uses less digits than its factorization.

201561862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 201561862 is about 14197.2483953758. The cubic root of 201561862 is about 586.3219060953.

The spelling of 201561862 in words is "two hundred one million, five hundred sixty-one thousand, eight hundred sixty-two".