1456139557 has 8 divisors (see below), whose sum is σ = 1461479832. Its totient is φ = 1450809600.

The previous prime is 1456139521. The next prime is 1456139563. The reversal of 1456139557 is 7559316541.

It can be written as a sum of positive squares in 4 ways, for example, as 391683681 + 1064455876 = 19791^2 + 32626^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1456139557 - 2⁷ = 1456139429 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 (1456139257) 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 7 ways as a sum of consecutive naturals, for example, 373257 + ... + 377137.

It is an arithmetic number, because the mean of its divisors is an integer number (182684979).

Almost surely, 2^1456139557 is an apocalyptic number.

It is an amenable number.

1456139557 is a deficient number, since it is larger than the sum of its proper divisors (5340275).

1456139557 is an equidigital number, since it uses as much as digits as its factorization.

1456139557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5159.

The product of its digits is 567000, while the sum is 46.

The square root of 1456139557 is about 38159.3967064470. The cubic root of 1456139557 is about 1133.4464327634.

The spelling of 1456139557 in words is "one billion, four hundred fifty-six million, one hundred thirty-nine thousand, five hundred fifty-seven".