1351056657 has 32 divisors (see below), whose sum is σ = 1959137280. Its totient is φ = 825027840.

The previous prime is 1351056649. The next prime is 1351056659. The reversal of 1351056657 is 7566501531.

It is not a de Polignac number, because 1351056657 - 2³ = 1351056649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1351056659) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 283698 + ... + 288420.

It is an arithmetic number, because the mean of its divisors is an integer number (61223040).

Almost surely, 2^1351056657 is an apocalyptic number.

1351056657 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1351056657 is a deficient number, since it is larger than the sum of its proper divisors (608080623).

1351056657 is a wasteful number, since it uses less digits than its factorization.

1351056657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4893.

The product of its (nonzero) digits is 94500, while the sum is 39.

The square root of 1351056657 is about 36756.7226096125. The cubic root of 1351056657 is about 1105.4977268129.

The spelling of 1351056657 in words is "one billion, three hundred fifty-one million, fifty-six thousand, six hundred fifty-seven".