1565297352 has 128 divisors (see below), whose sum is σ = 4487577600. Its totient is φ = 505237824.

The previous prime is 1565297347. The next prime is 1565297369. The reversal of 1565297352 is 2537925651.

1565297352 is a `hidden beast` number, since 1 + 5 + 6 + 5 + 297 + 352 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

Its product of digits (567000) is a multiple of the sum of its prime factors (1512).

It is a junction number, because it is equal to n+sod(n) for n = 1565297298 and 1565297307.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1178913 + ... + 1180239.

It is an arithmetic number, because the mean of its divisors is an integer number (35059200).

Almost surely, 2^1565297352 is an apocalyptic number.

1565297352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1565297352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2243788800).

1565297352 is an abundant number, since it is smaller than the sum of its proper divisors (2922280248).

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

1565297352 is a wasteful number, since it uses less digits than its factorization.

1565297352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512 (or 1502 counting only the distinct ones).

The product of its digits is 567000, while the sum is 45.

The square root of 1565297352 is about 39563.8389441672. The cubic root of 1565297352 is about 1161.0892839749.

The spelling of 1565297352 in words is "one billion, five hundred sixty-five million, two hundred ninety-seven thousand, three hundred fifty-two".