1355455491 has 8 divisors (see below), whose sum is σ = 1946295120. Its totient is φ = 834126432.

The previous prime is 1355455489. The next prime is 1355455523. The reversal of 1355455491 is 1945545531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1355455491 - 2¹ = 1355455489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1355455411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17377596 + ... + 17377673.

It is an arithmetic number, because the mean of its divisors is an integer number (243286890).

Almost surely, 2^1355455491 is an apocalyptic number.

1355455491 is a deficient number, since it is larger than the sum of its proper divisors (590839629).

1355455491 is a wasteful number, since it uses less digits than its factorization.

1355455491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34755285.

The product of its digits is 270000, while the sum is 42.

The square root of 1355455491 is about 36816.5111193334. The cubic root of 1355455491 is about 1106.6962042829.

The spelling of 1355455491 in words is "one billion, three hundred fifty-five million, four hundred fifty-five thousand, four hundred ninety-one".