1297455715 has 8 divisors (see below), whose sum is σ = 1563462720. Its totient is φ = 1033620672.

The previous prime is 1297455689. The next prime is 1297455739. The reversal of 1297455715 is 5175547921.

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 1297455715 - 2⁵ = 1297455683 is a prime.

It is a super-2 number, since 2×1297455715² = 3366782664772322450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541674 + ... + 544063.

It is an arithmetic number, because the mean of its divisors is an integer number (195432840).

Almost surely, 2^1297455715 is an apocalyptic number.

1297455715 is a deficient number, since it is larger than the sum of its proper divisors (266007005).

1297455715 is a wasteful number, since it uses less digits than its factorization.

1297455715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085981.

The product of its digits is 441000, while the sum is 46.

The square root of 1297455715 is about 36020.2125896003. The cubic root of 1297455715 is about 1090.6804143293.

It can be divided in two parts, 129745 and 5715, that added together give a triangular number (135460 = T₅₂₀).

The spelling of 1297455715 in words is "one billion, two hundred ninety-seven million, four hundred fifty-five thousand, seven hundred fifteen".