55346240 has 56 divisors (see below), whose sum is σ = 138744960. Its totient is φ = 20971008.

The previous prime is 55346231. The next prime is 55346251. The reversal of 55346240 is 4264355.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1529 + ... + 10631.

Almost surely, 2^55346240 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 55346240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69372480).

55346240 is an abundant number, since it is smaller than the sum of its proper divisors (83398720).

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

55346240 is a wasteful number, since it uses less digits than its factorization.

55346240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9139 (or 9129 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 55346240 is about 7439.5053599013. The cubic root of 55346240 is about 381.0915980859.

The spelling of 55346240 in words is "fifty-five million, three hundred forty-six thousand, two hundred forty".