1564430255 has 4 divisors (see below), whose sum is σ = 1877316312. Its totient is φ = 1251544200.

The previous prime is 1564430243. The next prime is 1564430267. The reversal of 1564430255 is 5520344651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5520344651 = 5641 ⋅978611.

It is an interprime number because it is at equal distance from previous prime (1564430243) and next prime (1564430267).

It is not a de Polignac number, because 1564430255 - 2⁶ = 1564430191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156443021 + ... + 156443030.

It is an arithmetic number, because the mean of its divisors is an integer number (469329078).

Almost surely, 2^1564430255 is an apocalyptic number.

1564430255 is a deficient number, since it is larger than the sum of its proper divisors (312886057).

1564430255 is an equidigital number, since it uses as much as digits as its factorization.

1564430255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312886056.

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 1564430255 is about 39552.8792251588. The cubic root of 1564430255 is about 1160.8748491068.

The spelling of 1564430255 in words is "one billion, five hundred sixty-four million, four hundred thirty thousand, two hundred fifty-five".