1564997053 has 2 divisors, whose sum is σ = 1564997054. Its totient is φ = 1564997052.

The previous prime is 1564997051. The next prime is 1564997059. The reversal of 1564997053 is 3507994651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1395919044 + 169078009 = 37362^2 + 13003^2 .

It is a cyclic number.

It is not a de Polignac number, because 1564997053 - 2¹ = 1564997051 is a prime.

Together with 1564997051, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1564996988 and 1564997006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1564997051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 782498526 + 782498527.

It is an arithmetic number, because the mean of its divisors is an integer number (782498527).

Almost surely, 2^1564997053 is an apocalyptic number.

It is an amenable number.

1564997053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1564997053 is an equidigital number, since it uses as much as digits as its factorization.

1564997053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1020600, while the sum is 49.

The square root of 1564997053 is about 39560.0436425442. The cubic root of 1564997053 is about 1161.0150283816.

The spelling of 1564997053 in words is "one billion, five hundred sixty-four million, nine hundred ninety-seven thousand, fifty-three".