97278007 has 2 divisors, whose sum is σ = 97278008. Its totient is φ = 97278006.

The previous prime is 97277959. The next prime is 97278011. The reversal of 97278007 is 70087279.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97278007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97278067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48639003 + 48639004.

It is an arithmetic number, because the mean of its divisors is an integer number (48639004).

Almost surely, 2^97278007 is an apocalyptic number.

97278007 is a deficient number, since it is larger than the sum of its proper divisors (1).

97278007 is an equidigital number, since it uses as much as digits as its factorization.

97278007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392, while the sum is 40.

The square root of 97278007 is about 9862.9613707040. The cubic root of 97278007 is about 459.9086255179.

The spelling of 97278007 in words is "ninety-seven million, two hundred seventy-eight thousand, seven".