1057517247 has 8 divisors (see below), whose sum is σ = 1414558080. Its totient is φ = 702743960.

The previous prime is 1057517231. The next prime is 1057517267. The reversal of 1057517247 is 7427157501.

It is a happy number.

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 1057517247 - 2⁴ = 1057517231 is a prime.

It is a super-2 number, since 2×1057517247² = 2236685455404918018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057517267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565797 + ... + 567662.

It is an arithmetic number, because the mean of its divisors is an integer number (176819760).

Almost surely, 2^1057517247 is an apocalyptic number.

1057517247 is a deficient number, since it is larger than the sum of its proper divisors (357040833).

1057517247 is a wasteful number, since it uses less digits than its factorization.

1057517247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133773.

The product of its (nonzero) digits is 68600, while the sum is 39.

The square root of 1057517247 is about 32519.4902635327. The cubic root of 1057517247 is about 1018.8161476514.

The spelling of 1057517247 in words is "one billion, fifty-seven million, five hundred seventeen thousand, two hundred forty-seven".