55919045 has 48 divisors (see below), whose sum is σ = 85398768. Its totient is φ = 34836480.

The previous prime is 55919029. The next prime is 55919051. The reversal of 55919045 is 54091955.

It can be written as a sum of positive squares in 8 ways, for example, as 19509889 + 36409156 = 4417^2 + 6034^2 .

It is not a de Polignac number, because 55919045 - 2⁴ = 55919029 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 308855 + ... + 309035.

It is an arithmetic number, because the mean of its divisors is an integer number (1779141).

Almost surely, 2^55919045 is an apocalyptic number.

It is an amenable number.

55919045 is a deficient number, since it is larger than the sum of its proper divisors (29479723).

55919045 is a wasteful number, since it uses less digits than its factorization.

55919045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 38.

The square root of 55919045 is about 7477.9037838154. The cubic root of 55919045 is about 382.4017889025.

The spelling of 55919045 in words is "fifty-five million, nine hundred nineteen thousand, forty-five".