97851563 has 4 divisors (see below), whose sum is σ = 98860440. Its totient is φ = 96842688.

The previous prime is 97851547. The next prime is 97851581. The reversal of 97851563 is 36515879.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97851563 - 2⁴ = 97851547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97851163) 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, 504293 + ... + 504486.

It is an arithmetic number, because the mean of its divisors is an integer number (24715110).

Almost surely, 2^97851563 is an apocalyptic number.

97851563 is a deficient number, since it is larger than the sum of its proper divisors (1008877).

97851563 is a wasteful number, since it uses less digits than its factorization.

97851563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008876.

The product of its digits is 226800, while the sum is 44.

The square root of 97851563 is about 9891.9948948632. The cubic root of 97851563 is about 460.8107362985.

The spelling of 97851563 in words is "ninety-seven million, eight hundred fifty-one thousand, five hundred sixty-three".