97651019 has 2 divisors, whose sum is σ = 97651020. Its totient is φ = 97651018.

The previous prime is 97651003. The next prime is 97651049. The reversal of 97651019 is 91015679.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97651019 - 2⁴ = 97651003 is a prime.

It is a super-2 number, since 2×97651019² = 19071443023476722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97651049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48825509 + 48825510.

It is an arithmetic number, because the mean of its divisors is an integer number (48825510).

Almost surely, 2^97651019 is an apocalyptic number.

97651019 is a deficient number, since it is larger than the sum of its proper divisors (1).

97651019 is an equidigital number, since it uses as much as digits as its factorization.

97651019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 38.

The square root of 97651019 is about 9881.8530144908. The cubic root of 97651019 is about 460.4957148179.

The spelling of 97651019 in words is "ninety-seven million, six hundred fifty-one thousand, nineteen".