1315526651 has 2 divisors, whose sum is σ = 1315526652. Its totient is φ = 1315526650.

The previous prime is 1315526629. The next prime is 1315526683. The reversal of 1315526651 is 1566255131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1315526651 - 2¹⁸ = 1315264507 is a prime.

It is a super-2 number, since 2×1315526651² = 3461220738982551602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1315526951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657763325 + 657763326.

It is an arithmetic number, because the mean of its divisors is an integer number (657763326).

Almost surely, 2^1315526651 is an apocalyptic number.

1315526651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315526651 is an equidigital number, since it uses as much as digits as its factorization.

1315526651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 35.

The square root of 1315526651 is about 36270.1895638829. The cubic root of 1315526651 is about 1095.7207437047.

The spelling of 1315526651 in words is "one billion, three hundred fifteen million, five hundred twenty-six thousand, six hundred fifty-one".