201555426 has 32 divisors (see below), whose sum is σ = 414118656. Its totient is φ = 65360000.

The previous prime is 201555413. The next prime is 201555433. The reversal of 201555426 is 624555102.

201555426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 201555393 and 201555402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105076 + ... + 106976.

It is an arithmetic number, because the mean of its divisors is an integer number (12941208).

Almost surely, 2^201555426 is an apocalyptic number.

201555426 is an abundant number, since it is smaller than the sum of its proper divisors (212563230).

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

201555426 is a wasteful number, since it uses less digits than its factorization.

201555426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2378.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 201555426 is about 14197.0217299263. The cubic root of 201555426 is about 586.3156654835.

The spelling of 201555426 in words is "two hundred one million, five hundred fifty-five thousand, four hundred twenty-six".