97772543 has 16 divisors (see below), whose sum is σ = 113909760. Its totient is φ = 83042400.

The previous prime is 97772527. The next prime is 97772551. The reversal of 97772543 is 34527779.

It is a Cunningham number, because it is equal to 9888²-1.

It is a cyclic number.

It is not a de Polignac number, because 97772543 - 2⁴ = 97772527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97772494 and 97772503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97772513) 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, 4946 + ... + 14832.

It is an arithmetic number, because the mean of its divisors is an integer number (7119360).

Almost surely, 2^97772543 is an apocalyptic number.

97772543 is a deficient number, since it is larger than the sum of its proper divisors (16137217).

97772543 is a wasteful number, since it uses less digits than its factorization.

97772543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9958.

The product of its digits is 370440, while the sum is 44.

The square root of 97772543 is about 9887.9999494337. Note that the first 4 decimals coincide. The cubic root of 97772543 is about 460.6866603699.

The spelling of 97772543 in words is "ninety-seven million, seven hundred seventy-two thousand, five hundred forty-three".