97261951 has 2 divisors, whose sum is σ = 97261952. Its totient is φ = 97261950.

The previous prime is 97261949. The next prime is 97261961. The reversal of 97261951 is 15916279.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97261951 - 2¹ = 97261949 is a prime.

It is a super-2 number, since 2×97261951² = 18919774224652802, which contains 22 as substring.

Together with 97261949, 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 (97261921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48630975 + 48630976.

It is an arithmetic number, because the mean of its divisors is an integer number (48630976).

Almost surely, 2^97261951 is an apocalyptic number.

97261951 is a deficient number, since it is larger than the sum of its proper divisors (1).

97261951 is an equidigital number, since it uses as much as digits as its factorization.

97261951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 40.

The square root of 97261951 is about 9862.1473827965. The cubic root of 97261951 is about 459.8833210685.

The spelling of 97261951 in words is "ninety-seven million, two hundred sixty-one thousand, nine hundred fifty-one".