1352297657 has 8 divisors (see below), whose sum is σ = 1437018696. Its totient is φ = 1268151552.

The previous prime is 1352297647. The next prime is 1352297663. The reversal of 1352297657 is 7567922531.

It can be written as a sum of positive squares in 4 ways, for example, as 31629376 + 1320668281 = 5624^2 + 36341^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1352297657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1352297647) 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, 138878 + ... + 148295.

It is an arithmetic number, because the mean of its divisors is an integer number (179627337).

Almost surely, 2^1352297657 is an apocalyptic number.

1352297657 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1352297657 is a deficient number, since it is larger than the sum of its proper divisors (84721039).

1352297657 is a wasteful number, since it uses less digits than its factorization.

1352297657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287467.

The product of its digits is 793800, while the sum is 47.

The square root of 1352297657 is about 36773.6000005439. The cubic root of 1352297657 is about 1105.8361046376.

The spelling of 1352297657 in words is "one billion, three hundred fifty-two million, two hundred ninety-seven thousand, six hundred fifty-seven".