97569551 has 2 divisors, whose sum is σ = 97569552. Its totient is φ = 97569550.

The previous prime is 97569547. The next prime is 97569557. The reversal of 97569551 is 15596579.

It is a weak prime.

It is an emirp because it is prime and its reverse (15596579) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97569551 - 2² = 97569547 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 97569496 and 97569505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97569557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48784775 + 48784776.

It is an arithmetic number, because the mean of its divisors is an integer number (48784776).

Almost surely, 2^97569551 is an apocalyptic number.

97569551 is a deficient number, since it is larger than the sum of its proper divisors (1).

97569551 is an equidigital number, since it uses as much as digits as its factorization.

97569551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 425250, while the sum is 47.

The square root of 97569551 is about 9877.7300530031. The cubic root of 97569551 is about 460.3676188597.

The spelling of 97569551 in words is "ninety-seven million, five hundred sixty-nine thousand, five hundred fifty-one".