523551601 has 16 divisors (see below), whose sum is σ = 564283584. Its totient is φ = 483969024.

The previous prime is 523551577. The next prime is 523551641. The reversal of 523551601 is 106155325.

It is a cyclic number.

It is not a de Polignac number, because 523551601 - 2⁵ = 523551569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 523551601.

It is not an unprimeable number, because it can be changed into a prime (523551641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 766206 + ... + 766888.

It is an arithmetic number, because the mean of its divisors is an integer number (35267724).

It is a Poulet number, since it divides 2^523551600-1.

Almost surely, 2^523551601 is an apocalyptic number.

523551601 is the 11441-st decagonal number.

It is an amenable number.

523551601 is a deficient number, since it is larger than the sum of its proper divisors (40731983).

523551601 is a wasteful number, since it uses less digits than its factorization.

523551601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 523551601 is about 22881.2499877083. The cubic root of 523551601 is about 805.9717703827.

It can be divided in two parts, 52355 and 1601, that added together give a triangular number (53956 = T₃₂₈).

The spelling of 523551601 in words is "five hundred twenty-three million, five hundred fifty-one thousand, six hundred one".