55298287 has 4 divisors (see below), whose sum is σ = 60325416. Its totient is φ = 50271160.

The previous prime is 55298261. The next prime is 55298293. The reversal of 55298287 is 78289255.

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

It is a cyclic number.

It is not a de Polignac number, because 55298287 - 2¹⁵ = 55265519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55298237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2513548 + ... + 2513569.

It is an arithmetic number, because the mean of its divisors is an integer number (15081354).

Almost surely, 2^55298287 is an apocalyptic number.

55298287 is a deficient number, since it is larger than the sum of its proper divisors (5027129).

55298287 is a wasteful number, since it uses less digits than its factorization.

55298287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5027128.

The product of its digits is 403200, while the sum is 46.

The square root of 55298287 is about 7436.2817993941. The cubic root of 55298287 is about 380.9815046948.

The spelling of 55298287 in words is "fifty-five million, two hundred ninety-eight thousand, two hundred eighty-seven".