1355400065 has 4 divisors (see below), whose sum is σ = 1626480084. Its totient is φ = 1084320048.

The previous prime is 1355400061. The next prime is 1355400107. The reversal of 1355400065 is 5600045531.

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 353740864 + 1001659201 = 18808^2 + 31649^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355400065 - 2² = 1355400061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1355400061) 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, 135540002 + ... + 135540011.

It is an arithmetic number, because the mean of its divisors is an integer number (406620021).

Almost surely, 2^1355400065 is an apocalyptic number.

It is an amenable number.

1355400065 is a deficient number, since it is larger than the sum of its proper divisors (271080019).

1355400065 is an equidigital number, since it uses as much as digits as its factorization.

1355400065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271080018.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 1355400065 is about 36815.7583787160. The cubic root of 1355400065 is about 1106.6811194202.

Adding to 1355400065 its reverse (5600045531), we get a palindrome (6955445596).

The spelling of 1355400065 in words is "one billion, three hundred fifty-five million, four hundred thousand, sixty-five".