987554 has 4 divisors (see below), whose sum is σ = 1481334. Its totient is φ = 493776.

The previous prime is 987541. The next prime is 987559. The reversal of 987554 is 455789.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 714025 + 273529 = 845^2 + 523^2 .

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246887 + ... + 246890.

2⁹⁸⁷⁵⁵⁴ is an apocalyptic number.

987554 is a deficient number, since it is larger than the sum of its proper divisors (493780).

987554 is a wasteful number, since it uses less digits than its factorization.

987554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493779.

The product of its digits is 50400, while the sum is 38.

The square root of 987554 is about 993.7575156948. The cubic root of 987554 is about 99.5834001894.

The spelling of 987554 in words is "nine hundred eighty-seven thousand, five hundred fifty-four".