97873551 has 12 divisors (see below), whose sum is σ = 141487528. Its totient is φ = 65196144.

The previous prime is 97873549. The next prime is 97873561. The reversal of 97873551 is 15537879.

97873551 is a `hidden beast` number, since 97 + 8 + 7 + 3 + 551 = 666.

It is not a de Polignac number, because 97873551 - 2¹ = 97873549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97873497 and 97873506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97873511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9681 + ... + 17013.

Almost surely, 2^97873551 is an apocalyptic number.

97873551 is a deficient number, since it is larger than the sum of its proper divisors (43613977).

97873551 is a wasteful number, since it uses less digits than its factorization.

97873551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8822 (or 8819 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The square root of 97873551 is about 9893.1062361626. The cubic root of 97873551 is about 460.8452496209.

It can be divided in two parts, 978 and 73551, that added together give a square (74529 = 273²).

The spelling of 97873551 in words is "ninety-seven million, eight hundred seventy-three thousand, five hundred fifty-one".