531228601 has 4 divisors (see below), whose sum is σ = 531279652. Its totient is φ = 531177552.

The previous prime is 531228587. The next prime is 531228611. The reversal of 531228601 is 106822135.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 46172025 + 485056576 = 6795^2 + 22024^2 .

It is a cyclic number.

It is not a de Polignac number, because 531228601 - 2⁷ = 531228473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 531228601.

It is not an unprimeable number, because it can be changed into a prime (531228611) 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, 3690 + ... + 32803.

It is an arithmetic number, because the mean of its divisors is an integer number (132819913).

Almost surely, 2^531228601 is an apocalyptic number.

It is an amenable number.

531228601 is a deficient number, since it is larger than the sum of its proper divisors (51051).

531228601 is a wasteful number, since it uses less digits than its factorization.

531228601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51050.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 531228601 is about 23048.3969290708. The cubic root of 531228601 is about 809.8920757494.

The spelling of 531228601 in words is "five hundred thirty-one million, two hundred twenty-eight thousand, six hundred one".