1152426561 has 16 divisors (see below), whose sum is σ = 1805200320. Its totient is φ = 644713920.

The previous prime is 1152426559. The next prime is 1152426571. The reversal of 1152426561 is 1656242511.

It is not a de Polignac number, because 1152426561 - 2¹ = 1152426559 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1152426571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1342726 + ... + 1343583.

It is an arithmetic number, because the mean of its divisors is an integer number (112825020).

Almost surely, 2^1152426561 is an apocalyptic number.

1152426561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1152426561 is a deficient number, since it is larger than the sum of its proper divisors (652773759).

1152426561 is a wasteful number, since it uses less digits than its factorization.

1152426561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686336.

The product of its digits is 14400, while the sum is 33.

The square root of 1152426561 is about 33947.4087523628. The cubic root of 1152426561 is about 1048.4259289937.

The spelling of 1152426561 in words is "one billion, one hundred fifty-two million, four hundred twenty-six thousand, five hundred sixty-one".