55454742 has 48 divisors (see below), whose sum is σ = 139220640. Its totient is φ = 15624576.

The previous prime is 55454741. The next prime is 55454759. The reversal of 55454742 is 24745455.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55454697 and 55454706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55454741) 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, 6184 + ... + 12212.

It is an arithmetic number, because the mean of its divisors is an integer number (2900430).

Almost surely, 2^55454742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55454742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69610320).

55454742 is an abundant number, since it is smaller than the sum of its proper divisors (83765898).

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

55454742 is a wasteful number, since it uses less digits than its factorization.

55454742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6117 (or 6114 counting only the distinct ones).

The product of its digits is 112000, while the sum is 36.

The square root of 55454742 is about 7446.7940753052. The cubic root of 55454742 is about 381.3404690079.

The spelling of 55454742 in words is "fifty-five million, four hundred fifty-four thousand, seven hundred forty-two".