201554023 has 16 divisors (see below), whose sum is σ = 236300544. Its totient is φ = 169868160.

The previous prime is 201554021. The next prime is 201554047. The reversal of 201554023 is 320455102.

It is not a de Polignac number, because 201554023 - 2¹ = 201554021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201553985 and 201554003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201554021) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 4486 + ... + 20572.

It is an arithmetic number, because the mean of its divisors is an integer number (14768784).

Almost surely, 2^201554023 is an apocalyptic number.

201554023 is a deficient number, since it is larger than the sum of its proper divisors (34746521).

201554023 is a wasteful number, since it uses less digits than its factorization.

201554023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16182.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 201554023 is about 14196.9723180684. The cubic root of 201554023 is about 586.3143050591.

The spelling of 201554023 in words is "two hundred one million, five hundred fifty-four thousand, twenty-three".