1087553 has 2 divisors, whose sum is σ = 1087554. Its totient is φ = 1087552.

The previous prime is 1087543. The next prime is 1087561. The reversal of 1087553 is 3557801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 719104 + 368449 = 848^2 + 607^2 .

It is a cyclic number.

It is not a de Polignac number, because 1087553 - 2¹⁰ = 1086529 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1087543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543776 + 543777.

It is an arithmetic number, because the mean of its divisors is an integer number (543777).

2^1087553 is an apocalyptic number.

It is an amenable number.

1087553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087553 is an equidigital number, since it uses as much as digits as its factorization.

1087553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 1087553 is about 1042.8580919761. The cubic root of 1087553 is about 102.8371763676.

The spelling of 1087553 in words is "one million, eighty-seven thousand, five hundred fifty-three".