1355458091 has 4 divisors (see below), whose sum is σ = 1459724112. Its totient is φ = 1251192072.

The previous prime is 1355458067. The next prime is 1355458109. The reversal of 1355458091 is 1908545531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1908545531 = 41 ⋅46549891.

It is a de Polignac number, because none of the positive numbers 2^k-1355458091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1355458021) 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, 52132991 + ... + 52133016.

It is an arithmetic number, because the mean of its divisors is an integer number (364931028).

Almost surely, 2^1355458091 is an apocalyptic number.

1355458091 is a deficient number, since it is larger than the sum of its proper divisors (104266021).

1355458091 is a wasteful number, since it uses less digits than its factorization.

1355458091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104266020.

The product of its (nonzero) digits is 108000, while the sum is 41.

The square root of 1355458091 is about 36816.5464295607. The cubic root of 1355458091 is about 1106.6969118946.

The spelling of 1355458091 in words is "one billion, three hundred fifty-five million, four hundred fifty-eight thousand, ninety-one".