55423563 has 16 divisors (see below), whose sum is σ = 80890656. Its totient is φ = 33546240.

The previous prime is 55423541. The next prime is 55423573. The reversal of 55423563 is 36532455.

It is not a de Polignac number, because 55423563 - 2¹⁷ = 55292491 is a prime.

It is a super-2 number, since 2×55423563² = 6143542671229938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55423573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9270 + ... + 14027.

It is an arithmetic number, because the mean of its divisors is an integer number (5055666).

Almost surely, 2^55423563 is an apocalyptic number.

55423563 is a deficient number, since it is larger than the sum of its proper divisors (25467093).

55423563 is a wasteful number, since it uses less digits than its factorization.

55423563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23374.

The product of its digits is 54000, while the sum is 33.

The square root of 55423563 is about 7444.7003297648. The cubic root of 55423563 is about 381.2689870325.

The spelling of 55423563 in words is "fifty-five million, four hundred twenty-three thousand, five hundred sixty-three".