207157397 has 2 divisors, whose sum is σ = 207157398. Its totient is φ = 207157396.

The previous prime is 207157387. The next prime is 207157409. The reversal of 207157397 is 793751702.

207157397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194490916 + 12666481 = 13946^2 + 3559^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-207157397 is a prime.

It is a super-3 number, since 3×207157397³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (207157387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103578698 + 103578699.

It is an arithmetic number, because the mean of its divisors is an integer number (103578699).

Almost surely, 2^207157397 is an apocalyptic number.

It is an amenable number.

207157397 is a deficient number, since it is larger than the sum of its proper divisors (1).

207157397 is an equidigital number, since it uses as much as digits as its factorization.

207157397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92610, while the sum is 41.

The square root of 207157397 is about 14392.9634544106. The cubic root of 207157397 is about 591.6980642026.

The spelling of 207157397 in words is "two hundred seven million, one hundred fifty-seven thousand, three hundred ninety-seven".