87204553 has 2 divisors, whose sum is σ = 87204554. Its totient is φ = 87204552.

The previous prime is 87204529. The next prime is 87204571. The reversal of 87204553 is 35540278.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85322169 + 1882384 = 9237^2 + 1372^2 .

It is a cyclic number.

It is not a de Polignac number, because 87204553 - 2⁵ = 87204521 is a prime.

It is not a weakly prime, because it can be changed into another prime (87204503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43602276 + 43602277.

It is an arithmetic number, because the mean of its divisors is an integer number (43602277).

Almost surely, 2^87204553 is an apocalyptic number.

It is an amenable number.

87204553 is a deficient number, since it is larger than the sum of its proper divisors (1).

87204553 is an equidigital number, since it uses as much as digits as its factorization.

87204553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 87204553 is about 9338.3378071261. The cubic root of 87204553 is about 443.4517639518.

The spelling of 87204553 in words is "eighty-seven million, two hundred four thousand, five hundred fifty-three".