97427261 has 2 divisors, whose sum is σ = 97427262. Its totient is φ = 97427260.

The previous prime is 97427257. The next prime is 97427263. The reversal of 97427261 is 16272479.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48916036 + 48511225 = 6994^2 + 6965^2 .

It is a cyclic number.

It is not a de Polignac number, because 97427261 - 2² = 97427257 is a prime.

Together with 97427263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97427263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48713630 + 48713631.

It is an arithmetic number, because the mean of its divisors is an integer number (48713631).

Almost surely, 2^97427261 is an apocalyptic number.

It is an amenable number.

97427261 is a deficient number, since it is larger than the sum of its proper divisors (1).

97427261 is an equidigital number, since it uses as much as digits as its factorization.

97427261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 38.

The square root of 97427261 is about 9870.5248593983. The cubic root of 97427261 is about 460.1437184832.

The spelling of 97427261 in words is "ninety-seven million, four hundred twenty-seven thousand, two hundred sixty-one".