1052566157506 has 4 divisors (see below), whose sum is σ = 1578849236262. Its totient is φ = 526283078752.

The previous prime is 1052566157501. The next prime is 1052566157521. The reversal of 1052566157506 is 6057516652501.

It is a happy number.

1052566157506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 924176518281 + 128389639225 = 961341^2 + 358315^2 .

It is a super-2 number, since 2×1052566157506² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1052566157506.

It is not an unprimeable number, because it can be changed into a prime (1052566157501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263141539375 + ... + 263141539378.

Almost surely, 2^{1052566157506} is an apocalyptic number.

1052566157506 is a deficient number, since it is larger than the sum of its proper divisors (526283078756).

1052566157506 is an equidigital number, since it uses as much as digits as its factorization.

1052566157506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526283078755.

The product of its (nonzero) digits is 1890000, while the sum is 49.

The spelling of 1052566157506 in words is "one trillion, fifty-two billion, five hundred sixty-six million, one hundred fifty-seven thousand, five hundred six".