531077945 has 8 divisors (see below), whose sum is σ = 638017344. Its totient is φ = 424379824.

The previous prime is 531077933. The next prime is 531077947. The reversal of 531077945 is 549770135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 531077945 - 2⁶ = 531077881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531077947) 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 7 ways as a sum of consecutive naturals, for example, 55439 + ... + 64308.

It is an arithmetic number, because the mean of its divisors is an integer number (79752168).

Almost surely, 2^531077945 is an apocalyptic number.

It is an amenable number.

531077945 is a deficient number, since it is larger than the sum of its proper divisors (106939399).

531077945 is a wasteful number, since it uses less digits than its factorization.

531077945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120639.

The product of its (nonzero) digits is 132300, while the sum is 41.

The square root of 531077945 is about 23045.1284439901. The cubic root of 531077945 is about 809.8155069322.

The spelling of 531077945 in words is "five hundred thirty-one million, seventy-seven thousand, nine hundred forty-five".