531261404 has 6 divisors (see below), whose sum is σ = 929707464. Its totient is φ = 265630700.

The previous prime is 531261361. The next prime is 531261421. The reversal of 531261404 is 404162135.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66407672 + ... + 66407679.

It is an arithmetic number, because the mean of its divisors is an integer number (154951244).

Almost surely, 2^531261404 is an apocalyptic number.

It is an amenable number.

531261404 is a deficient number, since it is larger than the sum of its proper divisors (398446060).

531261404 is a wasteful number, since it uses less digits than its factorization.

531261404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132815355 (or 132815353 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 531261404 is about 23049.1085293987. The cubic root of 531261404 is about 809.9087454988.

The spelling of 531261404 in words is "five hundred thirty-one million, two hundred sixty-one thousand, four hundred four".