1151505601 has 12 divisors (see below), whose sum is σ = 1202956860. Its totient is φ = 1101936960.

The previous prime is 1151505599. The next prime is 1151505637. The reversal of 1151505601 is 1065051511.

It can be written as a sum of positive squares in 6 ways, for example, as 227406400 + 924099201 = 15080^2 + 30399^2 .

It is not a de Polignac number, because 1151505601 - 2¹ = 1151505599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151502601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76615 + ... + 90403.

It is an arithmetic number, because the mean of its divisors is an integer number (100246405).

Almost surely, 2^1151505601 is an apocalyptic number.

It is an amenable number.

1151505601 is a deficient number, since it is larger than the sum of its proper divisors (51451259).

1151505601 is an equidigital number, since it uses as much as digits as its factorization.

1151505601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13924 (or 13887 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 25.

The square root of 1151505601 is about 33933.8415302482. The cubic root of 1151505601 is about 1048.1465718821.

The spelling of 1151505601 in words is "one billion, one hundred fifty-one million, five hundred five thousand, six hundred one".