55203687 has 80 divisors (see below), whose sum is σ = 105380352. Its totient is φ = 27967680.

The previous prime is 55203677. The next prime is 55203697. The reversal of 55203687 is 78630255.

It is an interprime number because it is at equal distance from previous prime (55203677) and next prime (55203697).

It is not a de Polignac number, because 55203687 - 2⁶ = 55203623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55203647) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 330478 + ... + 330644.

Almost surely, 2^55203687 is an apocalyptic number.

55203687 is a deficient number, since it is larger than the sum of its proper divisors (50176665).

55203687 is a wasteful number, since it uses less digits than its factorization.

55203687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 55203687 is about 7429.9183710186. The cubic root of 55203687 is about 380.7641295354.

The spelling of 55203687 in words is "fifty-five million, two hundred three thousand, six hundred eighty-seven".