1564497452 has 24 divisors (see below), whose sum is σ = 3236892960. Its totient is φ = 647377920.

The previous prime is 1564497443. The next prime is 1564497511. The reversal of 1564497452 is 2547944651.

It is a junction number, because it is equal to n+sod(n) for n = 1564497397 and 1564497406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 962549 + ... + 964172.

It is an arithmetic number, because the mean of its divisors is an integer number (134870540).

Almost surely, 2^1564497452 is an apocalyptic number.

It is an amenable number.

1564497452 is an abundant number, since it is smaller than the sum of its proper divisors (1672395508).

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

1564497452 is a wasteful number, since it uses less digits than its factorization.

1564497452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926761 (or 1926759 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 47.

The square root of 1564497452 is about 39553.7286737926. The cubic root of 1564497452 is about 1160.8914698947.

The spelling of 1564497452 in words is "one billion, five hundred sixty-four million, four hundred ninety-seven thousand, four hundred fifty-two".