55280587 has 8 divisors (see below), whose sum is σ = 57162672. Its totient is φ = 53424000.

The previous prime is 55280551. The next prime is 55280597. The reversal of 55280587 is 78508255.

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

It is a cyclic number.

It is not a de Polignac number, because 55280587 - 2²³ = 46891979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55280527) 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, 1914 + ... + 10687.

It is an arithmetic number, because the mean of its divisors is an integer number (7145334).

Almost surely, 2^55280587 is an apocalyptic number.

55280587 is a deficient number, since it is larger than the sum of its proper divisors (1882085).

55280587 is a wasteful number, since it uses less digits than its factorization.

55280587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12749.

The product of its (nonzero) digits is 112000, while the sum is 40.

The square root of 55280587 is about 7435.0915932489. The cubic root of 55280587 is about 380.9408518850.

The spelling of 55280587 in words is "fifty-five million, two hundred eighty thousand, five hundred eighty-seven".