55287253 has 8 divisors (see below), whose sum is σ = 65364480. Its totient is φ = 45754800.

The previous prime is 55287251. The next prime is 55287259. The reversal of 55287253 is 35278255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55287253 - 2¹ = 55287251 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 (55287251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135973 + ... + 136378.

It is an arithmetic number, because the mean of its divisors is an integer number (8170560).

Almost surely, 2^55287253 is an apocalyptic number.

It is an amenable number.

55287253 is a deficient number, since it is larger than the sum of its proper divisors (10077227).

55287253 is a wasteful number, since it uses less digits than its factorization.

55287253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272387.

The product of its digits is 84000, while the sum is 37.

The square root of 55287253 is about 7435.5398593512. The cubic root of 55287253 is about 380.9561631651.

The spelling of 55287253 in words is "fifty-five million, two hundred eighty-seven thousand, two hundred fifty-three".