49170857 has 2 divisors, whose sum is σ = 49170858. Its totient is φ = 49170856.

The previous prime is 49170811. The next prime is 49170871. The reversal of 49170857 is 75807194.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48038761 + 1132096 = 6931^2 + 1064^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49170857 is a prime.

It is a super-2 number, since 2×49170857² = 4835546356228898, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49170257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24585428 + 24585429.

It is an arithmetic number, because the mean of its divisors is an integer number (24585429).

Almost surely, 2^49170857 is an apocalyptic number.

It is an amenable number.

49170857 is a deficient number, since it is larger than the sum of its proper divisors (1).

49170857 is an equidigital number, since it uses as much as digits as its factorization.

49170857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 49170857 is about 7012.1934514102. The cubic root of 49170857 is about 366.3553959778.

The spelling of 49170857 in words is "forty-nine million, one hundred seventy thousand, eight hundred fifty-seven".