201554423 has 4 divisors (see below), whose sum is σ = 230347920. Its totient is φ = 172760928.

The previous prime is 201554399. The next prime is 201554449. The reversal of 201554423 is 324455102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201554423 - 2¹⁶ = 201488887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201554392 and 201554401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201554453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14396738 + ... + 14396751.

It is an arithmetic number, because the mean of its divisors is an integer number (57586980).

Almost surely, 2^201554423 is an apocalyptic number.

201554423 is a deficient number, since it is larger than the sum of its proper divisors (28793497).

201554423 is an equidigital number, since it uses as much as digits as its factorization.

201554423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28793496.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 201554423 is about 14196.9864055721. The cubic root of 201554423 is about 586.3146929213.

The spelling of 201554423 in words is "two hundred one million, five hundred fifty-four thousand, four hundred twenty-three".