55487583 has 12 divisors (see below), whose sum is σ = 80227680. Its totient is φ = 36955296.

The previous prime is 55487563. The next prime is 55487629. The reversal of 55487583 is 38578455.

It is not a de Polignac number, because 55487583 - 2¹² = 55483487 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55487503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9210 + ... + 13992.

It is an arithmetic number, because the mean of its divisors is an integer number (6685640).

Almost surely, 2^55487583 is an apocalyptic number.

55487583 is a deficient number, since it is larger than the sum of its proper divisors (24740097).

55487583 is a wasteful number, since it uses less digits than its factorization.

55487583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6078 (or 6075 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The square root of 55487583 is about 7448.9987917840. The cubic root of 55487583 is about 381.4157323697.

It can be divided in two parts, 5548 and 7583, that added together give a palindrome (13131).

The spelling of 55487583 in words is "fifty-five million, four hundred eighty-seven thousand, five hundred eighty-three".