531523401 has 4 divisors (see below), whose sum is σ = 708697872. Its totient is φ = 354348932.

The previous prime is 531523393. The next prime is 531523417. The reversal of 531523401 is 104325135.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 531523401 - 2³ = 531523393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (531523471) 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, 88587231 + ... + 88587236.

It is an arithmetic number, because the mean of its divisors is an integer number (177174468).

Almost surely, 2^531523401 is an apocalyptic number.

It is an amenable number.

531523401 is a deficient number, since it is larger than the sum of its proper divisors (177174471).

531523401 is a wasteful number, since it uses less digits than its factorization.

531523401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177174470.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 531523401 is about 23054.7912807729. The cubic root of 531523401 is about 810.0418618816.

Adding to 531523401 its reverse (104325135), we get a palindrome (635848536).

The spelling of 531523401 in words is "five hundred thirty-one million, five hundred twenty-three thousand, four hundred one".