561528270 has 48 divisors (see below), whose sum is σ = 1491048000. Its totient is φ = 146553792.

The previous prime is 561528263. The next prime is 561528277. The reversal of 561528270 is 72825165.

It is a happy number.

561528270 is a `hidden beast` number, since 5 + 61 + 528 + 2 + 70 = 666.

It is an interprime number because it is at equal distance from previous prime (561528263) and next prime (561528277).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561528277) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62145 + ... + 70604.

It is an arithmetic number, because the mean of its divisors is an integer number (31063500).

Almost surely, 2^561528270 is an apocalyptic number.

561528270 is an abundant number, since it is smaller than the sum of its proper divisors (929519730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561528270 is a wasteful number, since it uses less digits than its factorization.

561528270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132809 (or 132806 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 561528270 is about 23696.5877290381. The cubic root of 561528270 is about 825.0061927910.

The spelling of 561528270 in words is "five hundred sixty-one million, five hundred twenty-eight thousand, two hundred seventy".