530551961 has 4 divisors (see below), whose sum is σ = 530616372. Its totient is φ = 530487552.

The previous prime is 530551921. The next prime is 530551981. The reversal of 530551961 is 169155035.

It is a happy number.

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 117852736 + 412699225 = 10856^2 + 20315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-530551961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (530551921) 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, 17660 + ... + 37053.

It is an arithmetic number, because the mean of its divisors is an integer number (132654093).

Almost surely, 2^530551961 is an apocalyptic number.

It is an amenable number.

530551961 is a deficient number, since it is larger than the sum of its proper divisors (64411).

530551961 is an equidigital number, since it uses as much as digits as its factorization.

530551961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64410.

The product of its (nonzero) digits is 20250, while the sum is 35.

The square root of 530551961 is about 23033.7135738031. The cubic root of 530551961 is about 809.5480692912.

The spelling of 530551961 in words is "five hundred thirty million, five hundred fifty-one thousand, nine hundred sixty-one".