201916554 has 64 divisors (see below), whose sum is σ = 482630400. Its totient is φ = 56259840.

The previous prime is 201916487. The next prime is 201916567. The reversal of 201916554 is 455619102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83182 + ... + 85574.

It is an arithmetic number, because the mean of its divisors is an integer number (7541100).

Almost surely, 2^201916554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201916554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241315200).

201916554 is an abundant number, since it is smaller than the sum of its proper divisors (280713846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201916554 is a wasteful number, since it uses less digits than its factorization.

201916554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460 (or 2446 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 201916554 is about 14209.7344802779. The cubic root of 201916554 is about 586.6656249264.

The spelling of 201916554 in words is "two hundred one million, nine hundred sixteen thousand, five hundred fifty-four".