97943553 has 16 divisors (see below), whose sum is σ = 145276800. Its totient is φ = 65216880.

The previous prime is 97943533. The next prime is 97943557. The reversal of 97943553 is 35534979.

97943553 is a `hidden beast` number, since 9 + 7 + 94 + 3 + 553 = 666.

It is not a de Polignac number, because 97943553 - 2¹⁰ = 97942529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97943499 and 97943508.

It is not an unprimeable number, because it can be changed into a prime (97943557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28308 + ... + 31578.

It is an arithmetic number, because the mean of its divisors is an integer number (9079800).

It is a Proth number, since it is equal to 2989 ⋅ 2¹⁵ + 1 and 2989 < 2¹⁵.

Almost surely, 2^97943553 is an apocalyptic number.

It is an amenable number.

97943553 is a deficient number, since it is larger than the sum of its proper divisors (47333247).

97943553 is a wasteful number, since it uses less digits than its factorization.

97943553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4389 (or 4383 counting only the distinct ones).

The product of its digits is 510300, while the sum is 45.

The square root of 97943553 is about 9896.6435219220. The cubic root of 97943553 is about 460.9550933965.

The spelling of 97943553 in words is "ninety-seven million, nine hundred forty-three thousand, five hundred fifty-three".