55913445 has 48 divisors (see below), whose sum is σ = 111646080. Its totient is φ = 25356672.

The previous prime is 55913441. The next prime is 55913453. The reversal of 55913445 is 54431955.

It is not a de Polignac number, because 55913445 - 2² = 55913441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55913441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43147 + ... + 44423.

It is an arithmetic number, because the mean of its divisors is an integer number (2325960).

Almost surely, 2^55913445 is an apocalyptic number.

It is an amenable number.

55913445 is a deficient number, since it is larger than the sum of its proper divisors (55732635).

55913445 is a wasteful number, since it uses less digits than its factorization.

55913445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434 (or 1431 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 55913445 is about 7477.5293379565. The cubic root of 55913445 is about 382.3890232963.

The spelling of 55913445 in words is "fifty-five million, nine hundred thirteen thousand, four hundred forty-five".