2517172257 has 8 divisors (see below), whose sum is σ = 3359917440. Its totient is φ = 1676270960.

The previous prime is 2517172253. The next prime is 2517172261. The reversal of 2517172257 is 7522717152.

It is an interprime number because it is at equal distance from previous prime (2517172253) and next prime (2517172261).

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 2517172257 - 2² = 2517172253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2517172253) 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, 457782 + ... + 463247.

It is an arithmetic number, because the mean of its divisors is an integer number (419989680).

Almost surely, 2^2517172257 is an apocalyptic number.

It is an amenable number.

2517172257 is a deficient number, since it is larger than the sum of its proper divisors (842745183).

2517172257 is an equidigital number, since it uses as much as digits as its factorization.

2517172257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921943.

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

The square root of 2517172257 is about 50171.4286920355. The cubic root of 2517172257 is about 1360.3092320542.

The spelling of 2517172257 in words is "two billion, five hundred seventeen million, one hundred seventy-two thousand, two hundred fifty-seven".