97121255 has 96 divisors (see below), whose sum is σ = 165473280. Its totient is φ = 53222400.

The previous prime is 97121209. The next prime is 97121279. The reversal of 97121255 is 55212179.

It is a happy number.

It is not a de Polignac number, because 97121255 - 2⁶ = 97121191 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1367870 + ... + 1367940.

It is an arithmetic number, because the mean of its divisors is an integer number (1723680).

Almost surely, 2^97121255 is an apocalyptic number.

97121255 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

97121255 is a deficient number, since it is larger than the sum of its proper divisors (68352025).

97121255 is a wasteful number, since it uses less digits than its factorization.

97121255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 130 counting only the distinct ones).

The product of its digits is 6300, while the sum is 32.

The square root of 97121255 is about 9855.0116691965. The cubic root of 97121255 is about 459.6614632656.

The spelling of 97121255 in words is "ninety-seven million, one hundred twenty-one thousand, two hundred fifty-five".