97206155 has 4 divisors (see below), whose sum is σ = 116647392. Its totient is φ = 77764920.

The previous prime is 97206139. The next prime is 97206157. The reversal of 97206155 is 55160279.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55160279 = 23 ⋅2398273.

It is not a de Polignac number, because 97206155 - 2⁴ = 97206139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97206157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9720611 + ... + 9720620.

It is an arithmetic number, because the mean of its divisors is an integer number (29161848).

Almost surely, 2^97206155 is an apocalyptic number.

97206155 is a deficient number, since it is larger than the sum of its proper divisors (19441237).

97206155 is a wasteful number, since it uses less digits than its factorization.

97206155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19441236.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 97206155 is about 9859.3181812943. The cubic root of 97206155 is about 459.7953642407.

The spelling of 97206155 in words is "ninety-seven million, two hundred six thousand, one hundred fifty-five".