55573340 has 48 divisors (see below), whose sum is σ = 125193600. Its totient is φ = 20646912.

The previous prime is 55573321. The next prime is 55573361. The reversal of 55573340 is 4337555.

It is a super-2 number, since 2×55573340² = 6176792237511200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55573297 and 55573306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25826 + ... + 27894.

It is an arithmetic number, because the mean of its divisors is an integer number (2608200).

Almost surely, 2^55573340 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 55573340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62596800).

55573340 is an abundant number, since it is smaller than the sum of its proper divisors (69620260).

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

55573340 is a wasteful number, since it uses less digits than its factorization.

55573340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174 (or 2172 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 32.

The square root of 55573340 is about 7454.7528463390. The cubic root of 55573340 is about 381.6121260542.

The spelling of 55573340 in words is "fifty-five million, five hundred seventy-three thousand, three hundred forty".