55694340 has 72 divisors (see below), whose sum is σ = 181942488. Its totient is φ = 13708800.

The previous prime is 55694299. The next prime is 55694341. The reversal of 55694340 is 4349655.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3594816 + 52099524 = 1896^2 + 7218^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 55694295 and 55694304.

It is not an unprimeable number, because it can be changed into a prime (55694341) 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, 9561 + ... + 14240.

It is an arithmetic number, because the mean of its divisors is an integer number (2526979).

Almost surely, 2^55694340 is an apocalyptic number.

It is an amenable number.

55694340 is an abundant number, since it is smaller than the sum of its proper divisors (126248148).

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

55694340 is a wasteful number, since it uses less digits than its factorization.

55694340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23829 (or 23824 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 55694340 is about 7462.8640614713. The cubic root of 55694340 is about 381.8888870297. Note that the first 5 decimals are identical.

The spelling of 55694340 in words is "fifty-five million, six hundred ninety-four thousand, three hundred forty".