55551546 has 48 divisors (see below), whose sum is σ = 128044800. Its totient is φ = 17345664.

The previous prime is 55551493. The next prime is 55551547. The reversal of 55551546 is 64515555.

55551546 is a `hidden beast` number, since 55 + 551 + 54 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 55551546.

It is not an unprimeable number, because it can be changed into a prime (55551547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115735 + ... + 116213.

It is an arithmetic number, because the mean of its divisors is an integer number (2667600).

Almost surely, 2^55551546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55551546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64022400).

55551546 is an abundant number, since it is smaller than the sum of its proper divisors (72493254).

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

55551546 is a wasteful number, since it uses less digits than its factorization.

55551546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883 (or 880 counting only the distinct ones).

The product of its digits is 75000, while the sum is 36.

The square root of 55551546 is about 7453.2909509827. The cubic root of 55551546 is about 381.5622343729.

The spelling of 55551546 in words is "fifty-five million, five hundred fifty-one thousand, five hundred forty-six".