97128154 has 4 divisors (see below), whose sum is σ = 145692234. Its totient is φ = 48564076.

The previous prime is 97128151. The next prime is 97128167. The reversal of 97128154 is 45182179.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45182179 = 7 ⋅6454597.

It can be written as a sum of positive squares in only one way, i.e., 96530625 + 597529 = 9825^2 + 773^2 .

It is not an unprimeable number, because it can be changed into a prime (97128151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24282037 + ... + 24282040.

Almost surely, 2^97128154 is an apocalyptic number.

97128154 is a deficient number, since it is larger than the sum of its proper divisors (48564080).

97128154 is a wasteful number, since it uses less digits than its factorization.

97128154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48564079.

The product of its digits is 20160, while the sum is 37.

The square root of 97128154 is about 9855.3616879341. The cubic root of 97128154 is about 459.6723470120.

The spelling of 97128154 in words is "ninety-seven million, one hundred twenty-eight thousand, one hundred fifty-four".