1395256501 has 4 divisors (see below), whose sum is σ = 1395508972. Its totient is φ = 1395004032.

The previous prime is 1395256493. The next prime is 1395256517. The reversal of 1395256501 is 1056525931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1056525931 = 113 ⋅9349787.

It can be written as a sum of positive squares in 2 ways, for example, as 566392401 + 828864100 = 23799^2 + 28790^2 .

It is a cyclic number.

It is not a de Polignac number, because 1395256501 - 2³ = 1395256493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1395256531) by changing a digit.

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, 117756 + ... + 129061.

It is an arithmetic number, because the mean of its divisors is an integer number (348877243).

Almost surely, 2^1395256501 is an apocalyptic number.

It is an amenable number.

1395256501 is a deficient number, since it is larger than the sum of its proper divisors (252471).

1395256501 is an equidigital number, since it uses as much as digits as its factorization.

1395256501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252470.

The product of its (nonzero) digits is 40500, while the sum is 37.

The square root of 1395256501 is about 37353.1324121552. The cubic root of 1395256501 is about 1117.4240600886.

The spelling of 1395256501 in words is "one billion, three hundred ninety-five million, two hundred fifty-six thousand, five hundred one".