97890055 has 16 divisors (see below), whose sum is σ = 120304800. Its totient is φ = 76440960.

The previous prime is 97890041. The next prime is 97890061. The reversal of 97890055 is 55009879.

It is not a de Polignac number, because 97890055 - 2¹⁹ = 97365767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97889993 and 97890020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41241 + ... + 43549.

It is an arithmetic number, because the mean of its divisors is an integer number (7519050).

Almost surely, 2^97890055 is an apocalyptic number.

97890055 is a deficient number, since it is larger than the sum of its proper divisors (22414745).

97890055 is a wasteful number, since it uses less digits than its factorization.

97890055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514.

The product of its (nonzero) digits is 113400, while the sum is 43.

The square root of 97890055 is about 9893.9403171840. The cubic root of 97890055 is about 460.8711516222.

The spelling of 97890055 in words is "ninety-seven million, eight hundred ninety thousand, fifty-five".