55757650 has 24 divisors (see below), whose sum is σ = 111688164. Its totient is φ = 20587200.

The previous prime is 55757641. The next prime is 55757659. The reversal of 55757650 is 5675755.

55757650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55757641) and next prime (55757659).

It can be written as a sum of positive squares in 6 ways, for example, as 23164969 + 32592681 = 4813^2 + 5709^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (55757659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42241 + ... + 43540.

Almost surely, 2^55757650 is an apocalyptic number.

55757650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55757650 is an abundant number, since it is smaller than the sum of its proper divisors (55930514).

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

55757650 is a wasteful number, since it uses less digits than its factorization.

55757650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85806 (or 85801 counting only the distinct ones).

The product of its (nonzero) digits is 183750, while the sum is 40.

The square root of 55757650 is about 7467.1045258520. The cubic root of 55757650 is about 382.0335350620.

It can be divided in two parts, 5575 and 7650, that added together give a square (13225 = 115²).

The spelling of 55757650 in words is "fifty-five million, seven hundred fifty-seven thousand, six hundred fifty".