55563464 has 32 divisors (see below), whose sum is σ = 115266240. Its totient is φ = 24897600.

The previous prime is 55563461. The next prime is 55563493. The reversal of 55563464 is 46436555.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55563461) 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, 1802 + ... + 10694.

It is an arithmetic number, because the mean of its divisors is an integer number (3602070).

Almost surely, 2^55563464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55563464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57633120).

55563464 is an abundant number, since it is smaller than the sum of its proper divisors (59702776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55563464 is a wasteful number, since it uses less digits than its factorization.

55563464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8981 (or 8977 counting only the distinct ones).

The product of its digits is 216000, while the sum is 38.

The square root of 55563464 is about 7454.0904207019. The cubic root of 55563464 is about 381.5895191434.

The spelling of 55563464 in words is "fifty-five million, five hundred sixty-three thousand, four hundred sixty-four".