55240704 has 168 divisors, whose sum is σ = 170081730. Its totient is φ = 17915904.

The previous prime is 55240699. The next prime is 55240711. The reversal of 55240704 is 40704255.

55240704 is a `hidden beast` number, since 552 + 40 + 70 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36578304 + 18662400 = 6048^2 + 4320^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1492974 + ... + 1493010.

Almost surely, 2^55240704 is an apocalyptic number.

55240704 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55240704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85040865).

55240704 is an abundant number, since it is smaller than the sum of its proper divisors (114841026).

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

55240704 is an frugal number, since it uses more digits than its factorization.

55240704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 55240704 is about 7432.4090307248. The cubic root of 55240704 is about 380.8492180340.

Adding to 55240704 its reverse (40704255), we get a palindrome (95944959).

The spelling of 55240704 in words is "fifty-five million, two hundred forty thousand, seven hundred four".