87554197 has 2 divisors, whose sum is σ = 87554198. Its totient is φ = 87554196.

The previous prime is 87554191. The next prime is 87554227. The reversal of 87554197 is 79145578.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85951441 + 1602756 = 9271^2 + 1266^2 .

It is a cyclic number.

It is not a de Polignac number, because 87554197 - 2³ = 87554189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87554191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43777098 + 43777099.

It is an arithmetic number, because the mean of its divisors is an integer number (43777099).

Almost surely, 2^87554197 is an apocalyptic number.

It is an amenable number.

87554197 is a deficient number, since it is larger than the sum of its proper divisors (1).

87554197 is an equidigital number, since it uses as much as digits as its factorization.

87554197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352800, while the sum is 46.

The square root of 87554197 is about 9357.0399699905. The cubic root of 87554197 is about 444.0436423973.

The spelling of 87554197 in words is "eighty-seven million, five hundred fifty-four thousand, one hundred ninety-seven".