1355456215 has 4 divisors (see below), whose sum is σ = 1626547464. Its totient is φ = 1084364968.

The previous prime is 1355456209. The next prime is 1355456237. The reversal of 1355456215 is 5126545531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5126545531 = 32443 ⋅158017.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1355456215 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135545617 + ... + 135545626.

It is an arithmetic number, because the mean of its divisors is an integer number (406636866).

Almost surely, 2^1355456215 is an apocalyptic number.

1355456215 is a deficient number, since it is larger than the sum of its proper divisors (271091249).

1355456215 is an equidigital number, since it uses as much as digits as its factorization.

1355456215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271091248.

The product of its digits is 90000, while the sum is 37.

The square root of 1355456215 is about 36816.5209518770. The cubic root of 1355456215 is about 1106.6964013256.

The spelling of 1355456215 in words is "one billion, three hundred fifty-five million, four hundred fifty-six thousand, two hundred fifteen".