1355541091 has 4 divisors (see below), whose sum is σ = 1381117392. Its totient is φ = 1329964792.

The previous prime is 1355541071. The next prime is 1355541101. The reversal of 1355541091 is 1901455531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1901455531 = 1993 ⋅954067.

It is a cyclic number.

It is not a de Polignac number, because 1355541091 - 2¹¹ = 1355539043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1355541071) 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, 12788071 + ... + 12788176.

It is an arithmetic number, because the mean of its divisors is an integer number (345279348).

Almost surely, 2^1355541091 is an apocalyptic number.

1355541091 is a deficient number, since it is larger than the sum of its proper divisors (25576301).

1355541091 is an equidigital number, since it uses as much as digits as its factorization.

1355541091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25576300.

The product of its (nonzero) digits is 13500, while the sum is 34.

The square root of 1355541091 is about 36817.6736228676. The cubic root of 1355541091 is about 1106.7195005602.

The spelling of 1355541091 in words is "one billion, three hundred fifty-five million, five hundred forty-one thousand, ninety-one".