55745090 has 16 divisors (see below), whose sum is σ = 100854072. Its totient is φ = 22184064.

The previous prime is 55745089. The next prime is 55745093. The reversal of 55745090 is 9054755.

It can be written as a sum of positive squares in 4 ways, for example, as 48121969 + 7623121 = 6937^2 + 2761^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55745090.

It is not an unprimeable number, because it can be changed into a prime (55745093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12179 + ... + 16118.

Almost surely, 2^55745090 is an apocalyptic number.

55745090 is a deficient number, since it is larger than the sum of its proper divisors (45108982).

55745090 is a wasteful number, since it uses less digits than its factorization.

55745090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28501.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 55745090 is about 7466.2634563749. The cubic root of 55745090 is about 382.0048472106.

The spelling of 55745090 in words is "fifty-five million, seven hundred forty-five thousand, ninety".