1356155461 has 4 divisors (see below), whose sum is σ = 1356394572. Its totient is φ = 1355916352.

The previous prime is 1356155459. The next prime is 1356155473. The reversal of 1356155461 is 1645516531.

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 1165881025 + 190274436 = 34145^2 + 13794^2 .

It is a cyclic number.

It is not a de Polignac number, because 1356155461 - 2¹ = 1356155459 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1356155461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356155261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110836 + ... + 122461.

It is an arithmetic number, because the mean of its divisors is an integer number (339098643).

Almost surely, 2^1356155461 is an apocalyptic number.

It is an amenable number.

1356155461 is a deficient number, since it is larger than the sum of its proper divisors (239111).

1356155461 is an equidigital number, since it uses as much as digits as its factorization.

1356155461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239110.

The product of its digits is 54000, while the sum is 37.

The square root of 1356155461 is about 36826.0160891726. The cubic root of 1356155461 is about 1106.8866742859.

The spelling of 1356155461 in words is "one billion, three hundred fifty-six million, one hundred fifty-five thousand, four hundred sixty-one".