1565452152 has 144 divisors (see below), whose sum is σ = 4739693400. Its totient is φ = 462913920.

The previous prime is 1565452099. The next prime is 1565452177. The reversal of 1565452152 is 2512545651.

1565452152 is a `hidden beast` number, since 1 + 56 + 5 + 452 + 152 = 666.

It is a super-2 number, since 2×1565452152² = 4901280880402862208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 1463874 + ... + 1464942.

Almost surely, 2^1565452152 is an apocalyptic number.

1565452152 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 1565452152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2369846700).

1565452152 is an abundant number, since it is smaller than the sum of its proper divisors (3174241248).

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

1565452152 is a wasteful number, since it uses less digits than its factorization.

1565452152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178 (or 1128 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The square root of 1565452152 is about 39565.7952276964. The cubic root of 1565452152 is about 1161.1275580013.

The spelling of 1565452152 in words is "one billion, five hundred sixty-five million, four hundred fifty-two thousand, one hundred fifty-two".