1457243281 has 8 divisors (see below), whose sum is σ = 1661653224. Its totient is φ = 1266021120.

The previous prime is 1457243267. The next prime is 1457243299. The reversal of 1457243281 is 1823427541.

It can be written as a sum of positive squares in 4 ways, for example, as 257313681 + 1199929600 = 16041^2 + 34640^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-1457243281 is a prime.

It is a super-2 number, since 2×1457243281² = 4247115960039289922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1457243281.

It is not an unprimeable number, because it can be changed into a prime (1457243981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3296710 + ... + 3297151.

It is an arithmetic number, because the mean of its divisors is an integer number (207706653).

Almost surely, 2^1457243281 is an apocalyptic number.

It is an amenable number.

1457243281 is a deficient number, since it is larger than the sum of its proper divisors (204409943).

1457243281 is a wasteful number, since it uses less digits than its factorization.

1457243281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6593891.

The product of its digits is 53760, while the sum is 37.

The square root of 1457243281 is about 38173.8559880974. The cubic root of 1457243281 is about 1133.7327368421.

The spelling of 1457243281 in words is "one billion, four hundred fifty-seven million, two hundred forty-three thousand, two hundred eighty-one".