201002554 has 16 divisors (see below), whose sum is σ = 308962368. Its totient is φ = 98021952.

The previous prime is 201002531. The next prime is 201002563. The reversal of 201002554 is 455200102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81954 + ... + 84370.

It is an arithmetic number, because the mean of its divisors is an integer number (19310148).

Almost surely, 2^201002554 is an apocalyptic number.

201002554 is a deficient number, since it is larger than the sum of its proper divisors (107959814).

201002554 is a wasteful number, since it uses less digits than its factorization.

201002554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3429.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 201002554 is about 14177.5369511068. The cubic root of 201002554 is about 585.7790813050.

Adding to 201002554 its reverse (455200102), we get a palindrome (656202656).

The spelling of 201002554 in words is "two hundred one million, two thousand, five hundred fifty-four".