55434250440 has 48 divisors (see below), whose sum is σ = 180161315100. Its totient is φ = 14782466688.

The previous prime is 55434250411. The next prime is 55434250457. The reversal of 55434250440 is 4405243455.

It can be written as a sum of positive squares in 2 ways, for example, as 54652153284 + 782097156 = 233778^2 + 27966^2 .

It is a super-2 number, since 2×55434250440² (a number of 22 digits) contains 22 as substring.

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 = 55434250395 and 55434250404.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76991655 + ... + 76992374.

Almost surely, 2^55434250440 is an apocalyptic number.

It is an amenable number.

55434250440 is an abundant number, since it is smaller than the sum of its proper divisors (124727064660).

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

55434250440 is a wasteful number, since it uses less digits than its factorization.

55434250440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153984046 (or 153984039 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 36.

Adding to 55434250440 its reverse (4405243455), we get a palindrome (59839493895).

The spelling of 55434250440 in words is "fifty-five billion, four hundred thirty-four million, two hundred fifty thousand, four hundred forty".