97155438 has 8 divisors (see below), whose sum is σ = 194310888. Its totient is φ = 32385144.

The previous prime is 97155431. The next prime is 97155449. The reversal of 97155438 is 83455179.

It is a sphenic number, since it is the product of 3 distinct primes.

97155438 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 97155438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97155431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8096281 + ... + 8096292.

It is an arithmetic number, because the mean of its divisors is an integer number (24288861).

Almost surely, 2^97155438 is an apocalyptic number.

97155438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97155438 is a wasteful number, since it uses less digits than its factorization.

97155438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16192578.

The product of its digits is 151200, while the sum is 42.

The square root of 97155438 is about 9856.7458118793. The cubic root of 97155438 is about 459.7153847432.

The spelling of 97155438 in words is "ninety-seven million, one hundred fifty-five thousand, four hundred thirty-eight".