1161524401 has 4 divisors (see below), whose sum is σ = 1171803492. Its totient is φ = 1151245312.

The previous prime is 1161524297. The next prime is 1161524423. The reversal of 1161524401 is 1044251611.

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

It can be written as a sum of positive squares in 2 ways, for example, as 164480625 + 997043776 = 12825^2 + 31576^2 .

It is a cyclic number.

It is not a de Polignac number, because 1161524401 - 2⁹ = 1161523889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161524801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5139376 + ... + 5139601.

It is an arithmetic number, because the mean of its divisors is an integer number (292950873).

Almost surely, 2^1161524401 is an apocalyptic number.

It is an amenable number.

1161524401 is a deficient number, since it is larger than the sum of its proper divisors (10279091).

1161524401 is a wasteful number, since it uses less digits than its factorization.

1161524401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10279090.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1161524401 is about 34081.1443616555. The cubic root of 1161524401 is about 1051.1776359376.

The spelling of 1161524401 in words is "one billion, one hundred sixty-one million, five hundred twenty-four thousand, four hundred one".