531005147401 has 3 divisors (see below), whose sum is σ = 531005876103. Its totient is φ = 531004418700.

The previous prime is 531005147371. The next prime is 531005147423. The reversal of 531005147401 is 104741500135.

The square root of 531005147401 is 728701.

It is a perfect power (a square), and thus also a powerful number.

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 only one way, i.e., 61752747001 + 469252400400 = 248501^2 + 685020^2 .

It is not a de Polignac number, because 531005147401 - 2¹⁹ = 531004623113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531005147471) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 364351 + ... + 1093051.

It is an arithmetic number, because the mean of its divisors is an integer number (177001958701).

Almost surely, 2^531005147401 is an apocalyptic number.

531005147401 is the 728701-st square number.

531005147401 is the 364351-st centered octagonal number.

It is an amenable number.

531005147401 is a deficient number, since it is larger than the sum of its proper divisors (728702).

531005147401 is an frugal number, since it uses more digits than its factorization.

531005147401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457402 (or 728701 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

Adding to 531005147401 its reverse (104741500135), we get a palindrome (635746647536).

The spelling of 531005147401 in words is "five hundred thirty-one billion, five million, one hundred forty-seven thousand, four hundred one".