97143511 has 2 divisors, whose sum is σ = 97143512. Its totient is φ = 97143510.

The previous prime is 97143503. The next prime is 97143547. The reversal of 97143511 is 11534179.

It is a weak prime.

It is an emirp because it is prime and its reverse (11534179) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97143511 - 2³ = 97143503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97143551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48571755 + 48571756.

It is an arithmetic number, because the mean of its divisors is an integer number (48571756).

Almost surely, 2^97143511 is an apocalyptic number.

97143511 is a deficient number, since it is larger than the sum of its proper divisors (1).

97143511 is an equidigital number, since it uses as much as digits as its factorization.

97143511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 31.

The square root of 97143511 is about 9856.1407761862. The cubic root of 97143511 is about 459.6965721068.

It can be divided in two parts, 9714 and 3511, that added together give a square (13225 = 115²).

The spelling of 97143511 in words is "ninety-seven million, one hundred forty-three thousand, five hundred eleven".