531750061 has 4 divisors (see below), whose sum is σ = 550086300. Its totient is φ = 513413824.

The previous prime is 531750059. The next prime is 531750097. The reversal of 531750061 is 160057135.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 263412900 + 268337161 = 16230^2 + 16381^2 .

It is a cyclic number.

It is not a de Polignac number, because 531750061 - 2¹ = 531750059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531750001) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 9168076 + ... + 9168133.

It is an arithmetic number, because the mean of its divisors is an integer number (137521575).

Almost surely, 2^531750061 is an apocalyptic number.

It is an amenable number.

531750061 is a deficient number, since it is larger than the sum of its proper divisors (18336239).

531750061 is a wasteful number, since it uses less digits than its factorization.

531750061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18336238.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 531750061 is about 23059.7064378539. The cubic root of 531750061 is about 810.1569888267.

The spelling of 531750061 in words is "five hundred thirty-one million, seven hundred fifty thousand, sixty-one".