561052306 has 4 divisors (see below), whose sum is σ = 841578462. Its totient is φ = 280526152.

The previous prime is 561052267. The next prime is 561052307. The reversal of 561052306 is 603250165.

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

It can be written as a sum of positive squares in only one way, i.e., 387893025 + 173159281 = 19695^2 + 13159^2 .

It is not an unprimeable number, because it can be changed into a prime (561052307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140263075 + ... + 140263078.

Almost surely, 2^561052306 is an apocalyptic number.

561052306 is a deficient number, since it is larger than the sum of its proper divisors (280526156).

561052306 is a wasteful number, since it uses less digits than its factorization.

561052306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280526155.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 561052306 is about 23686.5427194430. The cubic root of 561052306 is about 824.7730289611.

The spelling of 561052306 in words is "five hundred sixty-one million, fifty-two thousand, three hundred six".